Metabolism

Metabolism Testing and health information

Want to know what's going on inside you? 

Metabolism lab testing can identify health issues and assess your body's chemical balance and energy utilization.

Metabolism Lab Testing can help you learn about your body and uncover health problems. It's a simple blood test that tells you about your metabolism and how your body consumes food and energy. For example, vitamin or hormone imbalances can cause symptoms like exhaustion, weight gain, lack of sex desire, hair loss, or muscular pains. If you have diabetes, high cholesterol, or hypertension, this test will help you determine if particular medications are helpful for you. Our tests detect insulin resistance, which is linked to metabolic syndrome (a combination of risk factors that increase the chance of developing heart disease, stroke, and diabetes).

If you notice an imbalance in one of these areas, you may take proactive steps to correct the condition. We provide discounted lab testing packages so you can obtain all the information you need without breaking your budget. Because we partner with Quest Diagnostics laboratories across the United States, you have options for where your specimen is collected and when you receive your results - wherever life takes you!

To get the right test for you, choose from the selections below.

For additional information on Metabolism and Lab Testing, click here.

 


Name Matches
  • Fasting Insulin
  • Glucose (In CMP)
  • Hemoglobin A1c
  • TSH
  • Free T3
  • Free T4
  • Comprehensive Metabolic Panel (CMP): Albumin, Albumin/Globulin Ratio (calculated), Alkaline Phosphatase, ALT, AST, BUN/Creatinine Ratio, Calcium, Carbon Dioxide, Chloride, Creatinine with GFR Estimated, Globulin, Glucose, Potassium, Sodium, Total Bilirubin, Total Protein, Urea Nitrogen

Metabolic Discovery Panel

This thorough set of tests helps assess your metabolism. Are you storing too much fat and sugar or perhaps too little? Are you insulin resistant with subsequent inflammation? You can run this panel to discover whether your diet, fitness and nutritional habits are providing you the metabolic health and longevity you deserve. Don’t settle for one-size-fits-all health advice.

Preparation: Fast for 10-16 hours, overnight. Drink enough water and take your prescribed medications. No coffee or vigorous exercise on the morning of the blood draw.

  • CBC (includes Differential and Platelets)
  • Comprehensive Metabolic Panel (CMP)
  • Ferritin
  • Hemoglobin A1c with eAG
  • Insulin
  • Lipid Panel with Ratios
  • Vitamin B12 (Cobalamin)
  • Vitamin D, 25-Hydroxy, Total, Immunoassay

Metabolic Discovery Comprehensive Panel

This thorough set of tests helps assess your metabolism. Are you storing too much fat and sugar or perhaps too little? Are you insulin resistant with subsequent inflammation? You can run this panel to discover whether your diet, fitness and nutritional habits are providing you the metabolic health and longevity you deserve. Don’t settle for one-size-fits-all health advice.

Preparation: Fast for 10-16 hours, overnight. Drink enough water and take your prescribed medications. No coffee or vigorous exercise on the morning of the blood draw.

CONTAINS ALL OF THE TESTS IN THE Metabolic Discovery Panel

  • CBC (includes Differential and Platelets)
  • Comprehensive Metabolic Panel (CMP)
  • Ferritin
  • Hemoglobin A1c with eAG
  • Insulin
  • Lipid Panel with Ratios
  • Vitamin B12 (Cobalamin)
  • Vitamin D, 25-Hydroxy, Total, Immunoassay

PLUS

  • Adiponectin 
  • Iron and Total Iron Binding Capacity (TIBC)
  • Leptin
  • T3, Free
  • T4, Free
  • TSH

5-Hydroxyindoleacetic Acid (5-HIAA), 24-Hour Urine, with Creatinine

Patient Preparation: Patient should avoid food high in indoles: avocado, banana, tomato, plum, walnut, pineapple, and eggplant.

Collection Instructions : Collect 24-hour urine with 6N HCL to maintain a pH below 3. Urine without preservative is acceptable if pH is below 6 and the sample is shipped frozen. Keep urine refrigerated during collection if preservative is not used. Shipping refrigerated acceptable, shipping frozen acceptable. Record 24-hour urine volume on test request form and urine vial. Record patient's age on test request form and urine vial.

Clinical Significance: 5-HIAA is the end product of serotonin (5-hydroxytryptophan) and tyrptophan metabolism. Patients with carcinoid tumors of the midgut, e.g., ileum, produce high concentrations of 5-HIAA. Patients with carcinoid tumors of the foregut and hindgut may produce little or no 5-HIAA or do so intermittently.

Limitations: Patients with renal disease may display falsely decreased results. Urinary 5-HIAA is increased in patients with malabsorption disorders who also display a larger concentration of urinary tryptophan metabolites. Urinary 5-HIAA is increased in patients with intestinal obstruction and with some noncarcinoid islet cell tumors. Carcinoid syndrome may not cause elevated results, especially if the patient does not have diarrhea.


Serum albumin measurements are used in the monitoring and treatment of numerous diseases involving those related to nutrition and pathology particularly in the liver and kidney. Serum albumin is valuable when following response to therapy where improvement in the serum albumin level is the best sign of successful medical treatment. There may be a loss of albumin in the gastrointestinal tract, in the urine secondary to renal damage or direct loss of albumin through the skin. More than 50% of patients with gluten enteropathy have depressed albumin. The only cause of increased albumin is dehydration; there is no naturally occurring hyperalbuminemia

Description: An Alkaline Phosphatase test or ALP is a blood test that is used to screen for and monitor liver disease, bone disorders, and gallbladder disease.

Also Known As: ALP Test, Alk Phos Test, Alkp Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: No preparation required

When is an Alkaline Phosphatase test ordered?

An ALP test may be requested as a standard laboratory test, frequently in conjunction with a liver panel of further assays. When a person exhibits signs of a liver or bone issue, it is frequently requested in conjunction with a number of additional tests.

What does an Alkaline Phosphatase test check for?

An enzyme called alkaline phosphatase is present in many bodily tissues. The cells that make up bone and the liver have the highest quantities of ALP. Liver illness or bone diseases are the most frequent causes of high blood levels of ALP. The blood's concentration of ALP is determined by this test.

ALP is located in the liver on the margins of cells that converge to form bile ducts, which are minuscule tubes that transport bile from the liver to the bowels, where it is required to aid in the digestion of dietary fat. Osteoblasts, specialized cells involved in bone production, are responsible for producing ALP in bone. Isoenzymes, which are produced in unique forms by each type of tissue, are ALP.

For instance, when one or more bile ducts are obstructed, ALP blood levels may significantly rise. Gallbladder inflammation or gallstones may be the cause of this. Blood ALP levels rise slightly more subtly in cirrhosis, liver cancer, hepatitis, and when liver-toxic medications are used.

Increased ALP levels can result from any condition that promotes excessive bone growth, including bone diseases like Paget's disease. Because their bones are still growing, children and adolescents often have higher blood ALP levels. Because of this, the ALP test needs to be interpreted differently for children and adults.

It is feasible to distinguish between the various ALP forms generated by various bodily tissues. A test may be run to identify which isoenzyme is elevated in the blood if it is unclear from clinical signs and symptoms whether the cause of a high ALP test result is liver or bone illness.

Lab tests often ordered with an Alkaline Phosphatase test:

  • AST
  • ALT
  • GGT
  • Bilirubin
  • Comprehensive Metabolic Panel
  • Hepatic Function Panel
  • Alkaline Phosphatase Isoenzymes

Conditions where an Alkaline Phosphatase test is recommended:

  • Lier Disease
  • Hepatitis
  • Cirrhosis
  • Jaundice
  • Osteoporosis
  • Paget’s Disease
  • Vitamin D Deficiency

How does my health care provider use an Alkaline Phosphatase test?

Using the alkaline phosphatase test, liver disease and bone diseases can be found.

Damaged liver cells produce more ALP into the blood under situations that harm the liver. Because ALP levels are particularly high at the margins of the cells that unite to form bile ducts, this test is frequently used to identify obstructed bile ducts. Blood levels of ALP are frequently high when one or more of them are blocked, such as by a tumor.

ALP levels in the blood can be impacted by any illness or disease that hinders bone development or increases bone cell activity. For instance, an ALP test may be used to identify tumors that have metastasized to the bones or to identify Paget's disease, a condition that results in deformed bones. This examination could occasionally be used to track the progress of patients being treated for Paget's disease or other bone disorders such vitamin D insufficiency.

Tests for the ALP isoenzyme may be performed to identify the cause if ALP readings are elevated but it is unclear whether this is related to liver or bone illness. To distinguish between liver and bone illness, one may additionally perform a GGT test and/or a test for 5'-nucleotidase. The levels of GGT and 5'-nucleotidase are elevated in liver illness but not in disorders of the bones.

What do my Alkaline Phosphatase test results mean?

High ALP typically indicates the presence of a disease that increases bone cell activity or liver damage.

The liver is typically where the elevated ALP is coming from if other liver tests, such as bilirubin, aspartate aminotransferase, or alanine aminotransferase, are also high. The high ALP is probably the result of liver illness if GGT or 5-nucleotidase levels are also elevated. If one of these two tests comes out normal, a bone issue is probably to blame for the high ALP. The ALP is typically coming from bone if calcium and/or phosphorus readings are abnormal.

A test for ALP isoenzymes may be required to differentiate between bone and liver ALP if it is unclear from signs and symptoms or other regular testing whether the high ALP is from the liver or bone.

ALP test findings are typically analyzed alongside those of other liver disease testing. ALP is commonly significantly less increased than AST and ALT in several types of liver illness, such as hepatitis. ALP and bilirubin may increase substantially higher than AST or ALT when the bile ducts are obstructed. ALP levels in liver cancer may also be higher.

ALP may be elevated in some bone illnesses, such as Paget's disease, which causes enlarged and misshapen bones, or in some cancers that extend to the bone.

ALP levels will eventually drop or return to normal if Paget's disease is successfully treated in a patient. ALP levels should fall if someone with liver or bone cancer responds to therapy.

Other illnesses include Hodgkin's lymphoma, congestive heart failure, ulcerative colitis, and specific bacterial infections can cause moderately high ALP.

ALP levels may briefly drop after cardiac bypass surgery or blood transfusions. Levels may drop as a result of a zinc deficiency. Hypophosphatasia, a rare genetic bone metabolism condition, can result in extremely low levels of ALP that persist for a long time. Wilson disease, protein insufficiency, and malnutrition are further potential reasons of low ALP.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


Description: An ALT test is a blood test that is used to screen for and diagnose liver disease.

Also Known As: Alanine Aminotransferase Test, Alanine Transaminase Test, GPT Test, SGPT Test, Serum Glutamic Pyruvic Transaminase Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: No preparation required

When is an Alanine Transaminase test ordered?

When a person undergoes a standard health examination, ALT may be ordered as part of a full metabolic panel.

When a person has signs and symptoms of a liver problem, a healthcare provider will usually prescribe an ALT test.

Because many people with minor liver damage have no signs or symptoms, ALT may be ordered alone or in combination with other tests for persons who are at an elevated risk for liver disease. With modest liver injury, ALT levels will rise even if there are no other symptoms.

ALT may be ordered on a frequent basis during the course of treatment to establish whether the medication is effective when it is used to monitor the treatment of persons with liver disease.

What does an Alanine Transaminase blood test check for?

Alanine aminotransferase is an enzyme found mostly in liver and kidney cells. It's also found in much lesser concentrations in the heart and muscles. This test determines the amount of ALT in your blood.

The enzyme ALT converts alanine, a protein amino acid, into pyruvate, an important intermediary in cellular energy production. ALT levels in the blood are low in healthy people. ALT is released into the bloodstream when the liver is injured, frequently before more evident indications of liver injury, such as jaundice, appear. As a result, ALT is a useful test for detecting liver disease early on.

The liver is a critical organ positioned directly behind the rib cage on the upper right side of the abdomen. It is engaged in a variety of vital bodily functions. The liver aids in the digestion of nutrients, creates bile to aid in fat digestion, produces a variety of essential proteins such as blood clotting factors and albumin, and breaks down potentially hazardous compounds into safe substances that the body may utilize or discard.

Damage to liver cells can be caused by a variety of factors, resulting in an elevation in ALT. The test is most useful for detecting damage caused by hepatitis or medications or other toxins that are harmful to the liver.

As part of a liver panel, ALT is frequently tested alongside aspartate aminotransferase, another liver enzyme. When the liver is injured, both ALT and AST levels rise, albeit ALT is more specific for the liver and may be the only one to rise in some circumstances. An AST/ALT ratio can be used to help distinguish between different types of liver injury and their severity, as well as to distinguish liver injury from heart or muscle damage.

Lab tests often ordered with an Alanine Transaminase test:

  • AST
  • ALP
  • GGT
  • Bilirubin
  • Liver Panel
  • Comprehensive Metabolic Panel
  • Albumin
  • Total Protein
  • Prothrombin Time
  • Hepatitis Panel General

Conditions where a an Alanine Transaminase test is recommended:

  • Liver Disease
  • Hepatitis
  • Jaundice
  • Cirrhosis
  • Alcoholism
  • Wilson Disease
  • Hemochromatosis

How does my health care provider use an Alanine Transaminase test?

The alanine aminotransferase test is commonly used to diagnose liver damage. It's frequently ordered as part of a liver panel or complete metabolic panel with aspartate aminotransferase to screen for and/or diagnose liver disease.

ALT is an enzyme found mostly in liver and kidney cells. ALT is released into the bloodstream when the liver is injured. As a result, ALT is a useful test for detecting liver disease early on.

Although ALT is more specific to the liver than AST, they are both considered to be two of the most significant tests for detecting liver impairment. When AST is directly compared to ALT, an AST/ALT ratio is calculated. This ratio can assist distinguish between different types of liver disease and identify cardiac or muscle harm.

To assess which type of liver illness is present, ALT values are frequently matched to the results of other tests such as alkaline phosphatase, total protein, and bilirubin.

ALT is frequently requested to monitor the therapy of people with liver disease to evaluate if it is effective, and it can be ordered alone or in combination with other tests.

What do my ALT test results mean?

A low ALT level in the blood is normal and anticipated. The most prevalent cause of ALT levels that are higher than normal is liver disease.

Acute hepatitis and viral infections are the most common causes of very elevated ALT values. ALT levels are normally elevated for 1-2 months after acute hepatitis, but they might take up to 3-6 months to return to normal. ALT levels may also be significantly raised as a result of exposure to liver-toxic medications or other chemicals, or in situations that produce reduced blood flow (ischemia) to the liver.

In chronic hepatitis, ALT levels are frequently less than four times normal. Because ALT levels in this scenario regularly fluctuate between normal and slightly elevated, the test may be ordered frequently to observe if a trend emerges. Other reasons of mild ALT elevations include bile duct obstruction, cirrhosis, heart damage, alcohol addiction, and liver cancers.

ALT is frequently used in conjunction with an AST test or as part of a liver panel. See the Liver Panel article for more information on ALT values in relation to other liver tests.

The ALT level is usually greater than the AST level in most forms of liver disorders, and the AST/ALT ratio is low. There are a few exceptions: in alcoholic hepatitis, cirrhosis, and heart or muscle injury, the AST/ALT ratio is frequently more than 1, and it may be greater than 1 for a day or two after the onset of acute hepatitis.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


Amino acid analysis is necessary for the diagnosis of a variety of inborn errors of metabolism. These include, but are not limited to, phenylketonuria, tyrosimemia, citrullinemia, non-ketotic hyperglycinemia, maple syrup urine disease, and homocystinuria. The assay is also key for the continued monitoring of treatment plans for these disorders and useful for assessing nutritional status of patients. Our methodology is highly accurate at very low levels as well as at elevated levels.

This is a fasting test:  Minimun 4 hours after your last meal, or overnite for most accurate reading.  Non fasting specimens are acceptable for Pediatrics

 


IMPORTANT - The specimen for this test must be collected at a patient service center that can collect, store and transport frozen samples as outlined below.  

IMPORTANT: Before ordering this lab test, check and confirm with the selected patient service center to ensure that they can collect, store and transport frozen samples as outlined below.

Preferred Specimen(s) 

2 mL frozen plasma collected in an EDTA (lavender-top) tube

Collection Instructions 

Collect blood from stasis-free vein of patient (e.g., no tourniquet). Patient should not clench fist during collection, as muscular exertion often increases venous ammonia levels. Patient should avoid smoking prior to phlebotomy since smoking increases plasma ammonia levels. Tubes should be filled completely and kept tightly stoppered at all times. Place immediately on ice. Separate plasma from cells within 20 minutes and freeze plasma immediately.

Transport Temperature 

Frozen

Specimen Stability 

Room temperature: Unstable
Refrigerated: Unstable
Frozen -20° C: 72 hours
Frozen -70° C: 7 days

Reject Criteria 

Hemolysis • Lipemia • Received thawed • PPT Potassium EDTA (white-top) tube

Clinical Significance

Ammonia is one of the by-products of protein metabolism. Elevated blood ammonia levels have been associated with severe liver dysfunction such as hepatic encephalopathy, coma resulting from cirrhosis, severe hepatitis, Reye's syndrome, and drug hepatotoxicity. Also, elevated blood ammonia has been reported in cardiac failure, azotemia, and pulmonary emphysema. Correlation between plasma ammonia and the degree of encephalopathy can be erratic.


Description: Apo A1 and B is a blood test that measures that amount of Apolipoprotein A1 and Apolipoprotein B in the blood’s serum along with the ratio between B/A1. This test is used to assess cardiovascular risk. Low levels of APO A1 are associated with Coronary Artery Disease (CAD) and are said to predict CAD better then triglycerides and HDL does.

Also Known As: Apo A1 and B Test, Apo A1 Test, Apo B Test, APOAB Test, Apolipoprotein B-100 Test, Apolipoprotein Evaluation Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: Fasting for 12 hours is required.

When are Apolipoprotein A1 and B tests ordered?

Apolipoprotein A-I and B, as well as other lipid tests, may be ordered as part of a screening to identify a person's risk of cardiovascular disease.

Apo A-I is a protein that plays a key function in lipid metabolism and is the most abundant protein in HDL, or "good cholesterol." Excess cholesterol in cells is removed by HDL, which transports it to the liver for recycling or elimination. Apo A-I levels tend to rise and fall with HDL levels, and apo A-I deficits are linked to an increased risk of CVD.

Apo B is a protein that plays a role in lipid metabolism and is the major protein component of lipoproteins including VLDL and LDL, popularly known as "bad cholesterol." Apo B concentrations are similar to LDL-C concentrations.

What does Apolipoprotein A1 and B blood tests check for?

Lipids are transported throughout the bloodstream by apolipoproteins, which mix with them. Lipoproteins are held together by apolipoproteins, which protect the water-repellent lipids at their core.

Lipoproteins are cholesterol or triglyceride-rich proteins that transport lipids throughout the body for cell absorption. HDL, on the other hand, is like an empty cab or taxi. It travels to the tissues to collect excess cholesterol before returning it to the liver. Cholesterol is either recycled for future use or eliminated in bile in the liver. The only mechanism for cells to get rid of excess cholesterol is by HDL reverse transport. It protects the arteries and, if enough HDL is present, it can even reverse the formation of fatty plaques, which are deposits caused by atherosclerosis and can contribute to cardiovascular disease.

Sticking with the taxi analogy, the driver is Apolipoprotein A. It permits HDL to be detected and bound by receptors in the liver at the end of the transport by activating the enzymes that load cholesterol from the tissues into HDL. Apolipoprotein A is divided into two types: apo A-I and apo A-II. Apo A-I has a higher prevalence than apo A-II. Apo A-I concentrations can be evaluated directly, and they tend to rise and fall in tandem with HDL levels. Deficiencies in apo A-I are linked to an increased risk of cardiovascular disease.

Chylomicrons are lipoprotein particles that transport dietary fats from the digestive system to tissue, primarily the liver, via the bloodstream. These dietary lipids are repackaged in the liver and combined with apo B-100 to create triglyceride-rich VLDL. This combo is similar to a taxi with a full load of passengers and apo B-100 as the driver. The taxi moves from place to place in the bloodstream, releasing one passenger at a time.

Triglycerides are removed from VLDL by an enzyme called lipoprotein lipase, which produces intermediate density lipoproteins first, then LDL. VLDL contains one molecule of apo B-100, which is kept as VLDL loses triglycerides and shrinks to become the cholesterol-rich LDL. Apo B-100 is detected by receptors on the surface of many different types of cells in the body. The absorption of cholesterol into cells is aided by these receptors.

LDL and apo B-100 transport cholesterol that is essential for cell membrane integrity, sex hormone generation, and steroid production. Excess LDL, on the other hand, can cause fatty deposits in artery walls, as well as blood vessel hardening and scarring. Atherosclerosis is a condition in which fatty deposits restrict blood arteries. The risk of a heart attack increases as the atherosclerotic process progresses.

LDL-C levels, which are typically ordered as part of a lipid profile, tend to mimic Apo B-100 levels. Many experts believe that apo B levels will eventually show to be a more accurate predictor of CVD risk than LDL-C. Others disagree, believing that vitamin B is only a modestly superior choice and that it should not be used on a regular basis. The clinical utility of apo B, as well as other developing cardiac risk markers including apo A-I, Lp(a), and hs-CRP, is still unknown.

Lab tests often ordered with Apolipoprotein A1 and B tests:

  • Cholesterol Total
  • HDL Cholesterol
  • LDL Cholesterol
  • Triglycerides
  • Lipid Panel
  • Lipoprotein (a)
  • Homocysteine
  • hs-CRP
  • Lipoprotein Fractionation, Ion Mobility

Conditions where Apolipoprotein A1 and B tests are recommended:

  • Cardiovascular Disease
  • Heart Attack
  • Stroke
  • Congestive Heart Failure
  • Angina

How does my health care provider use Apolipoprotein A1 and B tests?

An apo B/apo A-I ratio can be determined by ordering both an apo A-I and an apo B test. To assess the risk of developing CVD, this ratio is sometimes used instead of the total cholesterol/HDL ratio.

An apo A-I test may be ordered in the following situations:

Assist in the diagnosis of apo A-I deficiency caused by genetic or acquired diseases.

Assist those with a personal or family history of heart disease, high cholesterol, or triglycerides in their blood.

Keep track of how well lifestyle changes and lipid therapies are working.

An apo A-I test can be ordered in conjunction with an apo B test to determine the apo B/apo A-I ratio. This ratio is occasionally used instead of the total cholesterol/HDL ratio to assess the risk of developing CVD.

As an alternative to non-HDL-C, Apo B levels may be ordered to assess the success of lipid treatment.

An apo B test may be conducted in rare circumstances to assist determine a genetic issue that causes apo B overproduction or underproduction.

What do my Apolipoprotein A1 and B test results mean?

Low apo A-I levels are linked to low HDL levels and slowed elimination of excess cholesterol from the body. Low levels of apo A-I, as well as high levels of apo B, are linked to a higher risk of cardiovascular disease.

Deficiencies in apo A-I are caused by a number of hereditary diseases. Abnormal lipid levels, notably excessive amounts of low-density lipoprotein, are common in people with certain illnesses. They frequently have a higher rate of atherosclerosis. Low apo A-I levels are caused by several genetic diseases.

Raised apo B levels are linked to elevated LDL-C and non-HDL-C levels, and are linked to an increased risk of cardiovascular disease. Elevations may be caused by a high-fat diet and/or a reduction in LDL clearance from the blood.

A direct cause of abnormal apo B levels is some hereditary diseases. Familial combined hyperlipidemia, for example, is an inherited condition that causes excessive cholesterol and triglyceride levels in the blood. Apolipoprotein B deficiency, also known as Bassen-Kornzweig syndrome, is a relatively rare hereditary disorder that results in unusually low amounts of apo B.

A variety of underlying diseases and other factors might result in abnormal apo B levels.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


Description: An AST blood test is a test that is used to screen for and diagnose liver disease.

Also Known As: Aspartate Aminotransferase Test, Serum Glutamic-Oxaloacetic Transaminase Test, SGOT Test Transaminase, Serum AST Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: No preparation required

When is an Aspartate Aminotransferase test ordered?

When someone undergoes a standard health examination, an AST test may be requested as part of a full metabolic panel.

When a person exhibits indications and symptoms of a liver problem, an AST test may be ordered along with numerous other tests.

Because many persons with minor liver damage have no signs or symptoms, AST may be ordered alone or in combination with other tests for people who are at an elevated risk for liver disease.

When AST is used to evaluate the effectiveness of treatment for people with liver disease, it may be ordered on a frequent basis during the course of treatment.

What does an Aspartate Aminotransferase blood test check for?

Aspartate aminotransferase is an enzyme found in cells all over the body, but especially in the heart and liver, as well as the kidneys and muscles to a lesser amount. AST levels in the blood are typically low in healthy people. AST is released into the bloodstream when liver or muscle cells are damaged. As a result, AST can be used to detect or monitor liver disease.

The liver is a critical organ found directly behind the rib cage in the upper right side of the abdomen. It is engaged in a variety of vital bodily functions. The liver aids in the digestion of nutrients, creates bile to aid in fat digestion, manufactures numerous vital proteins such as blood clotting factors, and breaks down potentially hazardous compounds into safe substances that the body may utilize or expel.

A variety of disorders can harm liver cells and cause AST levels to rise. The test is most effective in detecting liver damage caused by hepatitis, liver-toxic medications, cirrhosis, or alcoholism. AST, on the other hand, is not particular to the liver and can be elevated in diseases affecting other organs.

Alanine aminotransferase testing is frequently combined with an AST test. When the liver is injured, both of these enzymes become high in the bloodstream. A computed AST/ALT ratio can help distinguish between different types of liver injury and determine whether elevated levels are due to something else, such as a heart or muscle injury.

Lab tests often ordered with an Aspartate Aminotransferase test:

  • GGT
  • ALT
  • ALP
  • Bilirubin
  • Hepatic Function Panel
  • Comprehensive Metabolic Panel (CMP)
  • Albumin
  • Total Protein

Conditions where an Aspartate Aminotransferase test is recommended:

  • Liver Disease
  • Hepatitis
  • Jaundice
  • Alcoholism
  • Cirrhosis
  • Wilson Disease
  • Hemochromatosis

How does my health care provider use an Aspartate Aminotransferase test?

The aspartate aminotransferase blood test is commonly used to identify liver disease. It is frequently ordered in conjunction with alanine aminotransferase, another liver enzyme, or as part of a liver panel or comprehensive metabolic panel to screen for and/or diagnose liver problems.

Although ALT is more specific for the liver than AST and is more usually elevated than AST, both are regarded to be two of the most significant tests for detecting liver impairment. When AST is directly compared to ALT, an AST/ALT ratio is calculated. This ratio can be used to differentiate between different types of liver disease and hepatic harm from heart or muscle damage.

To assess which type of liver illness is present, AST levels are frequently compared to the results of other tests such as alkaline phosphatase, total protein, and bilirubin.

AST is frequently evaluated to monitor the treatment of people with liver disease, and it can be ordered alone or in combination with other tests.

AST is sometimes used to monitor persons who are receiving potentially hazardous drugs for the liver. If the person's AST levels rise, he or she may be moved to another medicine.

What do my AST test results mean?

Low AST levels in the blood are typical and anticipated.

Acute hepatitis and viral infections are the most common causes of very high AST values. AST values are normally elevated for 1-2 months after acute hepatitis, but they might take up to 3-6 months to recover to normal. AST levels can also be significantly high as a result of exposure to liver-toxic medications or other chemicals, as well as situations that produce reduced blood supply to the liver.

AST values are usually lower in chronic hepatitis, generally less than 4 times normal, and are more likely to be normal than ALT levels. With chronic hepatitis, AST levels typically fluctuate between normal and slightly elevated, so the test may be ordered repeatedly to detect the pattern. Other illnesses of the liver, particularly when the bile ducts are clogged, as well as cirrhosis and certain malignancies of the liver, can cause moderate increases. AST can also rise after a heart attack or a muscular damage, although to a far higher extent than ALT.

The AST test is frequently done in conjunction with the ALT test or as part of a liver panel. See the Liver Panel article for more information on AST values in relation to other liver tests.

The ALT level is usually greater than the AST level in most kinds of liver disease, and the AST/ALT ratio is low. There are a few exceptions: in alcoholic hepatitis, cirrhosis, hepatitis C virus-related chronic liver disease, and the first day or two of acute hepatitis or injury from bile duct obstruction, the AST/ALT ratio is frequently elevated. AST levels are generally substantially higher than ALT after cardiac or muscle injury, and they tend to stay higher than ALT for longer than they do after liver injury.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


Description: A Basic Metabolic Panel is a blood test used to screen for, diagnose, and monitor a variety of conditions and diseases such as diabetes and kidney disease.  

Also Known As: BMP, Chemistry Panel, Chemistry Screen, Chem 7, Chem 11, BMP Test, SMA 7, SMAC7, Basic Metabolic Test, Chem Test, Chem Panel Test 

Collection Method: Blood Draw 

Specimen Type: Serum 

Test Preparation: 9-12 hours fasting is preferred. 

When is a Basic Metabolic Panel test ordered?  

A BMP may be requested as part of a standard physical examination. 

The panel is frequently ordered in hospital emergency rooms because its components provide vital information regarding a person's renal state, electrolyte and acid/base balance, blood glucose, and calcium levels. Significant changes in these test results can suggest serious issues such as renal failure, insulin shock or diabetic coma, respiratory distress, or abnormalities in heart rhythm. 

What does a Basic Metabolic Panel blood test check for? 

The basic metabolic panel (BMP) is a 9-test panel that provides essential information to a health practitioner about a person's current metabolic status, including kidney health, blood glucose level, electrolyte and acid/base balance. Abnormal results, particularly when they are combined, can suggest a problem that needs to be addressed. 

The following tests are included in the BMP test: 

  • Bun/Creatinine Ratio: this is a ratio between your Urea Nitrogen (BUN) result and Creatinine result.  

  • Calcium: this is a measurement of calcium in your blood. Calcium is the most abundant and one of the most important minerals in the body as it essential for proper nerve, muscle, and heart function. Calcium is also used for blood clot formation and the formation and maintenance of bones and teeth. 

  • Carbon Dioxide: this is a measure of carbon dioxide in your blood. Carbon dioxide is a negatively charged electrolyte that works with other electrolytes such as chloride, potassium, and sodium to regulate the body’s acid-base balance and fluid levels.  

  • Chloride: this is a measure of Chloride in your blood. Chloride is a negatively charged electrolyte that works with other electrolytes such as potassium and sodium to regulate the body’s acid-base balance and fluid levels. 

  • Creatinine: this is a measure of Creatinine levels in your blood. Creatinine is created from the breakdown of creatine in your muscles and is removed from your body by the kidneys. Elevated creatinine levels are often associated with kidney damage. 

  • Egfr African American: this is a measure of how well your kidneys are functioning. Glomeruli are tiny filters in your kidneys that filter out waste products from your blood for removal while retaining important substances such as nutrients and blood cells. 

  • Egfr Non-Afr. American: this is a measure of how well your kidneys are functioning. Glomeruli are tiny filters in your kidneys that filter out waste products from your blood for removal while retaining important substances such as nutrients and blood cells. 

  • Glucose: this is a measure of glucose in your blood. Glucose is created from the breakdown of carbohydrates during digestion and is the body’s primary source of energy. 

  • Potassium: this is a measure of Potassium in your blood. Potassium is an electrolyte that plays a vital role in cell metabolism, nerve and muscle function, and transport of nutrients into cells and removal of wastes products out of cells. 

  • Sodium: this is a measure of Sodium in your blood. Sodium is an electrolyte that plays a vital role in nerve and muscle function. 

  • Urea Nitrogen (Bun): this is a measure of Urea Nitrogen in your blood, also known as Blood Urea Nitrogen (BUN). Urea is a waste product created in the liver when proteins are broken down into amino acids. Elevated levels are often associated with kidney damage. 

Lab tests often ordered with a Basic Metabolic Panel test: 

  • Complete Blood Count with Differential and Platelets
  • Hemoglobin A1c
  • Iron and Total Iron Binding Capacity
  • Lipid Panel
  • Insulin
  • Vitamin B12 and Folate
  • C-Reactive Protein

Conditions where a Basic Metabolic Panel test is recommended: 

  • Diabetes 
  • Kidney Disease 
  • Liver Disease 

Commonly Asked Questions: 

How does my health care provider use a Basic Metabolic Panel test? 

The basic metabolic panel (BMP) is used to evaluate a person's kidney function, electrolyte, acid/base balance, and blood glucose level, all of which are linked to their metabolism. It can also be used to keep track of hospitalized patients and persons with known illnesses like hypertension and hypokalemia. 

If a health practitioner wants to track two or more separate BMP components, the full BMP might be ordered because it contains more information. Alternatively, when monitoring, the healthcare provider may order specific tests, such as a follow-up glucose, potassium, or calcium test, or an electrolyte panel to track sodium, potassium, chloride, and CO2. If a doctor needs further information, he or she can request a comprehensive metabolic panel (CMP), which is a collection of 21 tests that includes the BMP. 

What do my Basic Metabolic Panel results mean? 

The results of the tests included in the BMP are usually analyzed together to look for patterns. A single abnormal test result may indicate something different than a series of abnormal test findings. 

Out-of-range results on any of the BMP's tests can be caused by a number of things, including kidney failure, breathing issues, and diabetes-related consequences. If any of the results are abnormal, one or more follow-up tests are usually ordered to help determine the reason and/or establish a diagnosis. 

Is there anything else I should know? 

The results of the BMP components can be influenced by a range of prescription and over-the-counter medicines. Any medications you're taking should be disclosed to your healthcare professional. Similarly, it is critical to provide them with a thorough medical history because many other circumstances can influence how your results are interpreted. 

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.

Please note the following regarding BUN/Creatinine ratio: 

The lab does not report the calculation for the BUN/Creatinine Ratio unless one or both biomarkers’ results fall out of the published range. 

If you still wish to see the value, it's easy to calculate. Simply take your Urea Nitrogen (BUN) result and divide it by your Creatinine result.  

As an example, if your Urea Nitrogen result is 11 and your Creatinine result is 0.86, then you would divide 11 by 0.86 and get a BUN/Creatinine Ratio result of 12.79. 


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Measurement of the levels of bilirubin is used in the diagnosis and treatment of liver, hemolytic, hematologic, and metabolic disorders, including hepatitis and gall bladder obstruction. The assessment of direct bilirubin is helpful in the differentiation of hepatic disorders. The increase in total bilirubin associated with obstructive jaundice is primarily due to the direct (conjugated) fraction. Both direct and indirect bilirubin are increased in the serum with hepatitis.

Description: Bilirubin Fractionated is a blood test that is used to screen for or monitor liver disorders, hemolytic anemia, and neonatal jaundice.

Also Known As: Total Bilirubin Test, TBIL Test, Neonatal Bilirubin Test, Direct Bilirubin Test, Conjugated Bilirubin Test, Indirect Bilirubin Test, Unconjugated Bilirubin Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: No preparation required

When is a Bilirubin, Fractionated test ordered?

When someone shows evidence of abnormal liver function, a doctor will usually request a bilirubin test along with other laboratory tests. A bilirubin test may be ordered when a patient:

  • Evidence of jaundice is visible.
  • Has a history of excessive alcohol consumption
  • Has a possible drug toxicity
  • Has been exposed to viruses that cause hepatitis

Other signs and symptoms to look out for include:

  • Urine with a dark amber tint.
  • Nausea/vomiting
  • Swelling and/or pain in the abdomen
  • Fatigue and malaise which are common symptoms of chronic liver disease.

In babies with jaundice, measuring and monitoring bilirubin is considered routine medical therapy.

When someone is suspected of hemolytic anemia as a cause of anemia, bilirubin tests may be ordered. In this instance, it's frequently ordered in conjunction with other hemolysis-related tests such a complete blood count, reticulocyte count, haptoglobin, and LDH.

What does a Bilirubin, Fractionated blood test check for?

Bilirubin is an orange-yellow pigment that is largely formed as a byproduct of heme degradation. Heme is a component of hemoglobin, a red blood cell protein. Bilirubin is eventually digested by the liver, which allows it to be excreted from the body. This test assesses a person's liver function or aids in the diagnosis of anemias caused by RBC destruction by measuring the quantity of bilirubin in their blood.

After roughly 120 days in circulation, RBCs generally disintegrate. Heme is transformed to bilirubin as it is released from hemoglobin. Unconjugated bilirubin is another name for this type of bilirubin. Proteins transport unconjugated bilirubin to the liver, where sugars are linked to bilirubin to produce conjugated bilirubin. Conjugated bilirubin enters the bile and travels from the liver to the small intestines, where bacteria break it down further before it is excreted in the stool. As a result, bilirubin breakdown products give stool its distinctive brown hue.

A normal, healthy human produces a tiny quantity of bilirubin each day. The majority of bilirubin comes from damaged or degraded RBCs, with the rest coming from bone marrow or the liver. Small amounts of unconjugated bilirubin are normally discharged into the bloodstream, but there is almost no conjugated bilirubin. Laboratory tests can measure or estimate both types, and a total bilirubin result can be presented as well.

A person may appear jaundiced, with yellowing of the skin and/or whites of the eyes, if the bilirubin level in their blood rises. The pattern of bilirubin test results can provide information to the health care provider about the ailment that may be present. When there is an exceptional quantity of RBC destruction or when the liver is unable to handle bilirubin, unconjugated bilirubin levels may rise. Conversely, conjugated bilirubin levels can rise when the liver can process bilirubin but not transmit the conjugated bilirubin to the bile for elimination; this is most commonly caused by acute hepatitis or bile duct blockage.

In the first few days after birth, increased total and unconjugated bilirubin levels are fairly common in infants. This condition is known as "physiologic jaundice of the newborn," and it develops when the liver of a newborn is not yet mature enough to handle bilirubin. Physiologic jaundice in newborns usually goes away after a few days. RBCs may be damaged in newborn hemolytic illness due to blood incompatibility between the infant and the mother; in these circumstances, treatment may be necessary since large amounts of unconjugated bilirubin might harm the newborn's brain.

Increased total and conjugated bilirubin levels in infants can be caused by biliary atresia, an uncommon but life-threatening congenital disease. To avoid catastrophic liver damage that may necessitate liver transplantation during the first few years of life, this problem must be rapidly recognized and treated, usually with surgery. Despite early surgical therapy, some children may require liver transplants.

Lab tests often ordered with a Bilirubin, Fractionated test:

  • CMP
  • ALT
  • ALP
  • AST
  • Hepatitis A
  • Hepatitis B
  • Hepatitis C
  • Complete Blood Count (CBC)
  • Urinalysis
  • GGT
  • Reticulocyte Count

Conditions where a Bilirubin, Fractionated test is recommended:

  • Jaundice
  • Liver Disease
  • Hepatitis
  • Alcoholism
  • Hemolytic Anemia

Commonly Asked Questions:

How does my health care provider use a Bilirubin, Fractionated test?

A bilirubin test is used to detect an abnormally high quantity of the substance in the blood. It can be used to figure out what's causing your jaundice and/or diagnose illnesses like liver disease, hemolytic anemia, and bile duct blockage.

Bilirubin is an orange-yellow pigment that is largely formed as a byproduct of heme degradation. Heme is a component of hemoglobin, a red blood cell protein. Bilirubin is eventually digested by the liver, which allows it to be excreted from the body. An increased blood level can be caused by any disorder that speeds up the breakdown of RBCs or impairs the processing and elimination of bilirubin.

Laboratory testing can measure or estimate two types of bilirubin:

Unconjugated bilirubin—unconjugated bilirubin is formed when heme is released from hemoglobin. Proteins transport it to the liver. Small levels of the substance may be found in the blood.

Sugars are attached to bilirubin in the liver, resulting in conjugated bilirubin. It enters the bile and travels from the liver to the small intestines before being excreted in the feces. In normal circumstances, there is no conjugated bilirubin in the blood.

A chemical test is usually done to determine the total bilirubin level first. If the total bilirubin level rises, a second chemical test can be used to detect water-soluble forms of bilirubin, known as "direct" bilirubin. The amount of conjugated bilirubin present can be estimated using the direct bilirubin test. The "indirect" amount of unconjugated bilirubin can be estimated by subtracting the direct bilirubin level from the total bilirubin level. The pattern of bilirubin test results can provide information to the healthcare professional about the ailment that may be present.

Bilirubin is measured in adults and older children to:

  • Diagnose and/or monitor liver and bile duct disorders.
  • Evaluate patients with hemolytic anemia
  • Distinguish between the causes of jaundice in babies.

Only unconjugated bilirubin is raised in both physiologic jaundice and hemolytic illness of the infant.

Damage to the newborn's liver from neonatal hepatitis and biliary atresia will also raise conjugated bilirubin concentrations, which is generally the first indication that one of these less common disorders is present.

Because excessive unconjugated bilirubin harms growing brain cells, it is critical to detect and treat an increased amount of bilirubin in a newborn. Mental retardation, learning and developmental impairments, hearing loss, eye movement disorders, and mortality are all possible outcomes of this damage.

What do my bilirubin test results mean?

In adults and children, increased total bilirubin, primarily unconjugated bilirubin, could be caused by:

  • Hemolytic or pernicious anemia are two types of anemia.
  • Reaction to a transfusion
  • Cirrhosis
  • Gilbert syndrome

When conjugated bilirubin levels are higher than unconjugated bilirubin levels, there is usually a problem with bilirubin removal by the liver cells. This can be caused by a variety of factors, including:

  • Hepatitis caused by a virus
  • Reactions to drugs
  • Alcoholic hepatitis

When the bile ducts are blocked, conjugated bilirubin is raised more than unconjugated bilirubin. This can happen, for example, when:

  • In the bile ducts, there are gallstones.
  • Damaging of the bile ducts due to tumors

Increased bilirubin levels can also be caused by rare hereditary illnesses that involve aberrant bilirubin metabolism, such as Rotor, Dubin-Johnson, and Crigler-Najjar syndromes.

Low bilirubin levels are usually not a cause for worry and are not monitored.

A newborn's high bilirubin level may be transient and diminish within a few days to two weeks. However, if the bilirubin level exceeds a crucial threshold or rises rapidly, the cause must be investigated so that appropriate treatment can be started. Increased bilirubin levels can be caused by the rapid breakdown of red blood cells as a result of:

  • Incompatibility of the mother's blood type with that of her child
  • Infections that are present at birth
  • oxygen deficiency
  • Liver disease

Only unconjugated bilirubin is elevated in most of these disorders. In the rare disorders of biliary atresia and newborn hepatitis, increased conjugated bilirubin is found. To avoid liver damage, biliary atresia necessitates surgical surgery.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


Collection Instructions

Allow sample to clot for 30 minutes, spin at 3,000 RPM for 10 minutes and transfer serum to plastic, amber vial. If amber vial is not available, wrap tube in aluminum foil to protect from light. Freeze within 30 minutes and send frozen.


Description: A BUN/Creatinine ratio test is a blood test that measures levels of Urea Nitrogen and Creatinine in your blood and is useful in the diagnosis of renal disease.

Also Known As: Urea Nitrogen and Creatinine Ratio test, BUN test, Urea test, Urea Nitrogen test, Creat test, Blood Creatinine Test, Serum Creatinine Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: No preparation required

When is a BUN Creatinine Ratio test ordered?

BUN is a component of the BMP and CMP, two categories of widely-used tests:

  • as part of a regular health examination
  • prior to beginning the use of specific pharmacological therapy, determine how well the kidneys are functioning.
  • When a patient who is critically ill visits the emergency room or is admitted to the hospital

When kidney problems are suspected during a hospital stay, BUN is frequently ordered along with creatinine or a renal panel. Kidney dysfunction can show several indications and symptoms, such as:

  • fatigue, inability to focus, poor appetite, or difficulty sleeping
  • Swelling or puffiness, especially in the face, wrists, abdomen, thighs, or ankles or around the eyes
  • Foamy, bloody, or coffee-colored urine
  • a reduction in the urine's volume
  • problems urinating, such as a burning sensation or an unusual discharge, or a change in frequency, particularly at night
  • discomfort in the middle of the back, below the ribs, and next to the kidneys
  • elevated blood pressure

BUN may also be required for:

  • Patients with long-term illnesses or conditions like diabetes, congestive heart failure, and myocardial infarction should have regular kidney function checks.
  • monitoring renal function and treatment at frequent intervals in individuals with known kidney disease
  • Monitoring kidney function both before and after taking specific medications
  • When a CT scan is anticipated, furthermore to a creatinine
  • periodically to check on the efficiency of the dialysis

During a health examination, a routine metabolic panel that includes creatinine may be ordered. It might be prescribed if a patient is critically ill or if a doctor has reason to believe that their kidneys aren't functioning properly. Kidney dysfunction can show several indications and symptoms, such as:

  • fatigue, inability to focus, poor appetite, or difficulty sleeping
  • Swelling or puffiness, especially in the face, wrists, abdomen, thighs, or ankles, or around the eyes
  • Foamy, bloody, or coffee-colored urine
  • a reduction in the urine's volume
  • problems urinating, such as a burning sensation or an unusual discharge, or a change in frequency, particularly at night
  • discomfort in the middle of the back, below the ribs, and next to the kidneys
  • elevated blood pressure

When a person has a known kidney ailment or a condition that could impair kidney function, a creatinine blood test may be prescribed along with a BUN test, urine albumin, and other tests on a regular basis. When a CT scan is anticipated, before and throughout some medication regimens, as well as before and after dialysis, both BUN and creatinine may be requested to check the efficacy of treatments.

What does a BUN Creatinine Ratio test check for?

When protein is broken down into its constituent parts in the liver, urea is produced as a waste product. Ammonia is created during this process, and it is later changed into the less harmful waste product urea. This examination counts the urea nitrogen levels in the blood.

Ammonia and urea both contain nitrogen as an ingredient. Because urea contains nitrogen and because the body excretes excess nitrogen via urea/urea nitrogen, the terms urea and urea nitrogen are sometimes used interchangeably. The liver releases urea into the blood, which travels to the kidneys where it is removed from the circulation and discharged as urine. Since this is a continuous process, urea nitrogen levels in the blood are typically low and steady.

The majority of illnesses or ailments that affect the liver or kidneys have the potential to have an impact on the blood's urea content. Urea concentrations in the blood will increase if the liver produces more urea or if the kidneys are not functioning properly and are having trouble removing wastes from the blood. BUN values may decrease if severe liver illness or injury prevents the synthesis of urea.

Muscles release creatinine as a waste product after breaking down a substance called creatine. The kidneys eliminate creatinine from the body by filtering nearly all of it from the blood and releasing it into the urine. The creatinine level in the blood and/or urine is determined by this test.

The process that creates the energy required to contract muscles includes creatine. The body produces both creatine and creatinine at a fairly steady rate. Blood levels are typically a good indication of how well the kidneys are functioning since the kidneys filter almost all of the creatinine from the blood and release it into the urine. The amount created is influenced by a person's size and muscular mass. As a result, men's creatinine levels will be a little bit greater than those of women and children.

Calculations that are used to assess kidney function can be done using data from a blood creatinine test in conjunction with data from other tests, including a 24-hour urine creatinine test.

Lab tests often ordered with a BUN Creatinine Ratio test:

  • Urine Protein
  • eGFR
  • Creatinine Clearance
  • Comprehensive Metabolic Panel
  • Basic Metabolic Panel
  • Cystatin C
  • Renal Panel
  • Urinalysis
  • Microalbumin
  • Beta-2 Microglobin

Conditions where a BUN Creatinine Ratio test is recommended:

  • Kidney Disease
  • Diabetes
  • Hypertension
  • Proteinuria

How does my health care provider use a BUN Creatinine Ratio test?

The creatinine test and blood urea nitrogen tests are primarily used to assess kidney function under various conditions, aid in the diagnosis of kidney illness, and keep track of persons who have either acute or chronic renal failure or dysfunction. When requested as a component of a renal panel, basic metabolic panel, or comprehensive metabolic panel, it may also be used to assess a person's overall health state.

When protein is digested in the liver, urea is produced as a waste product. The liver releases urea into the blood, which travels to the kidneys where it is removed from the circulation and discharged as urine. Since this is a continuous process, urea nitrogen levels in the blood are typically low and steady. However, the level of urea in the blood will increase if the kidneys become diseased or damaged and are unable to remove waste products from the blood.

The kidneys are a pair of bean-shaped organs that are situated on the right and left sides of the back at the base of the ribcage. They include around a million nephrons, which are very small blood filtering organs. Blood is continuously filtered via a glomerulus, a tiny collection of looping blood arteries, in each nephron. Water and tiny molecules can pass through the glomerulus, while blood cells and bigger molecules are retained. Each glomerulus has a little tube attached to it that gathers the fluid and molecules that flow through it and reabsorbs what the body can use. Urine is created by the leftover waste.

Creatinine and BUN tests may be performed to monitor for renal dysfunction and the efficacy of treatment if the results are abnormal or if a person has an underlying condition known to impact the kidneys, such as diabetes or high blood pressure. Before some procedures, such a CT scan, that can call for the use of medications that can harm the kidneys, such as creatinine and BUN tests in the blood may also be prescribed to assess renal function.

What do my BUN Creatinine Ratio test results mean?

BUN levels that are higher indicate poor renal health. This could be brought on by failure, injury, or acute or chronic renal disease. A condition that reduces blood flow to the kidneys, such as congestive heart failure, shock, stress, a recent heart attack, or serious burns, as well as conditions that impede urine flow or dehydration, may also be to blame.

When there is excessive protein breakdown, a considerable rise in the amount of protein in the diet, or gastrointestinal bleeding, BUN values may be increased.

Low BUN levels are rare and typically not reason for alarm. The BUN test is not typically used to diagnose or monitor these disorders, but they may appear in severe liver illness, malnutrition, and occasionally when a person is overhydrated.

BUN values may be normal even in the presence of substantial malfunction in the other kidney if one kidney is fully functional.

Blood creatinine levels that are higher than normal point to renal disease or other disorders that have an impact on kidney function. These may consist of:

For instance, infections or autoimmune illnesses can cause kidney blood vessels to enlarge or become damaged.

  • infection of the kidneys with bacteria
  • death of kidney cells brought on by chemicals or medications, for instance, in the tiny tubes of the kidneys
  • Urinary tract obstruction can be brought on by prostate disease, kidney stones, or other conditions.
  • reduced renal blood flow brought on by shock, dehydration, congestive heart failure, atherosclerosis, or diabetes-related problems

Although they are uncommon, low blood creatinine levels are often not a cause for alarm. They can be observed in diseases that cause a loss of muscular mass.

As part of a creatinine clearance test, 24-hour urine creatinine levels are compared to blood levels.

There are no established reference ranges for single, random urine creatinine values. They are typically used in conjunction with other exams to compare levels of other chemicals detected in urine. The urine albumin test, the urine albumin/creatinine ratio, and the urine protein test are a few examples.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


Description: A hs-CRP or High Sensitivity C-Reactive Protein test is a blood test used to accurately detect lower concentrations of the protein C-Reactive Protein. This test is used to evaluate your risk of cardiovascular and heart disease and to check for inflammation and many other issues.

Also Known As: hsCRP Test, Cardiac CRP Test, high sensitivity C-reactive protein Test, CRP Test for heart disease.

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: No preparation required

When is a hs-CRP test ordered?

There is currently no consensus on when to get an hs-CRP test. It may be beneficial for treatment purposes to order hs-CRP for those that have kidney disease, diabetes or inflammatory disorders.

It's possible that hs-CRP will be tested again to confirm that a person has persistently low levels of inflammation.

What does a hs-CRP blood test check for?

C-reactive protein is a protein found in the blood that rises in response to infection and inflammation, as well as after trauma, surgery, or a heart attack. As a result, it's one of numerous proteins referred to as acute phase reactants. The high-sensitivity CRP test detects low levels of inflammation in the blood, which are linked to an increased risk of developing cardiovascular disease.

According to the American Heart Association, CVD kills more people in the United States each year than any other cause. A number of risk factors have been related to the development of CVD, including family history, high cholesterol, high blood pressure, being overweight or diabetic, however a considerable number of people with few or no recognized risk factors will also acquire CVD. This has prompted researchers to investigate for new risk variables that could be causing CVD or could be used to identify lifestyle modifications and/or treatments that could lower a person's risk.

High-sensitivity CRP is one of an increasing number of cardiac risk markers that may be used to assess an individual's risk. According to certain research, monitoring CRP with a highly sensitive assay can assist identify the risk level for CVD in persons who appear to be healthy. CRP levels at the higher end of the reference range can be measured with this more sensitive test. Even when cholesterol levels are within an acceptable range, these normal but slightly elevated levels of CRP in otherwise healthy persons might indicate the future risk of a heart attack, sudden cardiac death, stroke, and peripheral artery disease.

Lab tests often ordered with a hs-CRP test:

  • Complete Blood Count
  • Lipid Panel
  • Comprehensive Metabolic Panel
  • Lp-Pla2
  • Glucose

Conditions where a hs-CRP test is recommended:

  • Heart Attack
  • Heart Disease
  • Cardiovascular Disease
  • Stroke

How does my health care provider use a hs-CRP test?

A test for high-sensitivity C-reactive protein can be used to assess a person's risk of cardiovascular disease. It can be used in conjunction with a lipid profile or other cardiac risk markers, such as the lipoprotein-associated phospholipase A2 test, to provide further information regarding the risk of heart disease.

CRP is a protein that rises in the bloodstream as a result of inflammation. A continuous low level of inflammation, according to studies, plays a crucial role in atherosclerosis, the narrowing of blood vessels caused by the build-up of cholesterol and other lipids, which is typically linked to CVD. The hs-CRP test successfully detects low levels of C-reactive protein, indicating low but chronic inflammation, and so aids in predicting a person's risk of developing CVD.

Some specialists believe that high-sensitivity CRP is a good test for assessing CVD, heart attacks, and stroke risk, and that it can help in the evaluation process before a person gets one of these health problems. Some experts believe that combining a good marker for inflammation, such as hs-CRP, with a lipid profile is the best way to predict risk. This test has been recommended by several organizations for persons who are at a moderate risk of having a heart attack in the following ten years.

What does my hs-CRP test result mean?

Even when cholesterol levels are within an acceptable range, high levels of hs-CRP in otherwise healthy people have been found to predict an elevated risk of future heart attacks, strokes, sudden cardiac death, and/or peripheral arterial disease.

Higher hs-CRP concentrations indicate a higher risk of cardiovascular disease, while lower values indicate a lower risk. Individuals with hs-CRP values at the high end of the normal range are 1.5 to 4 times more likely than those with low levels of hs-CRP to have a heart attack.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


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Description: A Calcium test is a blood test that is used to screen for, diagnose, and monitor a wide range of medical conditions.

Also Known As: Ca Test, Serum Calcium Test, Calcium Blood Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: No preparation required

When is a Calcium test ordered?

A blood calcium test is frequently requested during a general medical evaluation. It's usually part of the comprehensive metabolic panel or the basic metabolic panel, two sets of tests that can be done during an initial evaluation or as part of a routine medical checks.

Many people do not experience symptoms of high or low calcium until their levels are dangerously high or low.

When a person has certain types of cancer, kidney illness, or has had a kidney transplant, calcium monitoring may be required. When someone is being treated for abnormal calcium levels, monitoring may be required to determine the effectiveness of medications such as calcium or vitamin D supplements.

What does a Calcium blood test check for?

Calcium is one of the most plentiful and vital minerals in the human body. It is required for cell signaling as well as the proper operation of muscles, nerves, and the heart. Calcium is essential for blood clotting as well as bone growth, density, and maintenance. This test determines how much calcium is present in the blood.

Calcium is found complexed in the bones for 99 percent of the time, while the remaining 1% circulates in the blood. Calcium levels are closely monitored; if too little is absorbed or consumed, or if too much is lost through the kidney or stomach, calcium is removed from bone to keep blood concentrations stable. Approximately half of the calcium in the blood is metabolically active and "free." The other half is "bound" to albumin, with a minor proportion complexed to anions like phosphate, and both of these forms are metabolically inactive.

Blood calcium can be measured using two different tests. The free and bound forms of calcium are measured in the total calcium test. Only the free, physiologically active form of calcium is measured in the ionized calcium test.

Lab tests often ordered with a Calcium test:

  • Phosphorus
  • Vitamin D
  • Magnesium
  • PTH
  • Albumin
  • Basic Metabolic Panel (BMP)
  • Comprehensive Metabolic Panel (CMP)

Conditions where a Calcium test is recommended:

  • Kidney Disease
  • Thyroid Disease
  • Alcoholism
  • Malnutrition
  • Parathyroid Diseases
  • Breast Cancer
  • Multiple Myeloma

How does my health care provider use a Calcium test?

A blood calcium test is used to screen for, diagnose, and monitor a variety of bone, heart, nerve, kidney, and tooth disorders. If a person has signs of a parathyroid disease, malabsorption, or an overactive thyroid, the test may be ordered.

A total calcium level is frequently checked as part of a standard health check. It's part of the comprehensive metabolic panel and the basic metabolic panel, which are both collections of tests used to diagnose or monitor a range of ailments.

When a total calcium result is abnormal, it is interpreted as a sign of an underlying disease. Additional tests to assess ionized calcium, urine calcium, phosphorus, magnesium, vitamin D, parathyroid hormone, and PTH-related peptide are frequently performed to assist determine the underlying problem. PTH and vitamin D are in charge of keeping calcium levels in the blood within a narrow range of values.

Measuring calcium and PTH combined can assist identify whether the parathyroid glands are functioning normally if the calcium is abnormal. Testing for vitamin D, phosphorus, and/or magnesium can assist evaluate whether the kidneys are excreting the right amount of calcium, and measuring urine calcium can help detect whether additional deficits or excesses exist. The balance of these many compounds is frequently just as critical as their concentrations.

The total calcium test is the most common test used to determine calcium status. Because the balance between free and bound calcium is usually constant and predictable, it is a reliable reflection of the quantity of free calcium present in the blood in most cases. However, the balance between bound and free calcium is altered in some persons, and total calcium is not a good indicator of calcium status. Ionized calcium measurement may be required in certain cases. Critically sick patients, those receiving blood transfusions or intravenous fluids, patients undergoing major surgery, and persons with blood protein disorders such low albumin are all candidates for ionized calcium testing.

What do my Calcium test results mean?

The amount of calcium circulating in the blood is not the same as the amount of calcium in the bones.

A feedback loop including PTH and vitamin D regulates and stabilizes calcium uptake, utilization, and excretion. Conditions and disorders that disturb calcium control can induce abnormal acute or chronic calcium elevations or declines, resulting in hypercalcemia or hypocalcemia symptoms.

Total calcium is usually tested instead of ionized calcium since it is easier to do and requires no additional treatment of the blood sample. Because the free and bound forms of calcium make up about half of the total, total calcium is usually a decent depiction of free calcium. Because nearly half of the calcium in blood is bonded to protein, high or low protein levels might alter total calcium test findings. In these circumstances, an ionized calcium test is more appropriate for measuring free calcium.

A normal total or ionized calcium test, when combined with other normal laboratory findings, indicates that a person's calcium metabolism is normal and blood levels are properly managed.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


Carbamazepine and its metabolite (10, 11-carbamazepine epoxide) are widely used for control of generalized tonic-clonic, partial-onset, complex and mixed seizure disorders. The metabolism of carbamazepine in epileptic patients has several different pathways that can be altered when the patient is co-medicated with other anticonvulsants and, therefore, its therapeutic level should be monitored along with its metabolite in their free and protein bound states.

Carbamazepine and its metabolite (10, 11-carbamazepine epoxide) are widely used for control of generalized tonic-clonic, partial-onset, complex and mixed seizure disorders. The metabolism of carbamazepine in epileptic patients has several different pathways that can be altered when the patient is co-medicated with other anticonvulsants and, therefore, it's therapeutic level should be monitored along with its metabolite in their free and protein bound states.

Carbamazepine and its metabolite (10, 11-Carbamazepine epoxide) are widely used for control of generalized tonic-clonic, partial-onset, complex and mixed seizure disorders. The metabolism of carbamazepine in epileptic patients has several different pathways that can be altered when the patient is co-medicated with other anticonvulsants and, therefore, its therapeutic level should be monitored along with its metabolite in their free and protein bound states

Description: Ion Mobility Lipoprotein Fractionation is a test that uses a gas-phase technology to separate the lipid particles by size. As each particle is separated, they are counted.

Also Known As: LDL Particle Testing, LDL-P Test, LDL Subclass Test, sdLDL Test, LDL Fractionations Test, LDL Particle Size Test, LDL Particle Number Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: Fasting preferred, but not required

When is a Lipoprotein Fractionation test ordered?

When someone has a personal or family history of early cardiovascular disease, this testing may be ordered as part of an overall evaluation of cardiac risk, especially if the person does not have typical cardiac risk factors like high cholesterol, high LDL cholesterol, high triglyceride, low HDL cholesterol, smoking, obesity, inactivity, diabetes, and/or hypertension.

When a person with elevated LDL-P and/or a high proportion of tiny, dense LDL particles has undertaken cholesterol-lowering treatment or lifestyle adjustments, the healthcare practitioner may conduct LDL lipoprotein subfraction testing, as well as other lipid tests, to assess treatment success.

Although LDL-P is not typically suggested as a screening test, some healthcare practitioners are using it in conjunction with a battery of other cardiac risk tests to evaluate a person's overall risk of getting CVD.

What does a Lipoprotein Fractionation blood test check for?

Low-density lipoproteins are lipid-transporting particles that travel throughout the body. Protein, cholesterol, triglyceride, and phospholipid molecules are all present in each particle. As they move through the bloodstream, their makeup changes. Lipoprotein particles range in size from large and fluffy to small and dense, depending on which molecules are eliminated and which are added. The relative amounts of particles with different characteristics in the blood are determined by LDL particle testing. Subfractionation testing is a term used to describe this process.

Traditional lipid testing determines the amount of LDL cholesterol in the blood but does not assess the number of LDL particles. Increased numbers of small, dense LDL particles have been linked to inflammation and are more likely to produce atherosclerosis than fewer light, fluffy LDL particles, according to some research. Researchers believe that the existence of an elevated quantity of sdLDL could be one of the reasons why some people have heart attacks while having relatively low total and LDL cholesterol levels.

The number of sdLDL particles in a person's blood is determined in part by genetics, in part by sex, and in part by lifestyle and overall health. Increased levels of sdLDL are linked to certain diseases and disorders, like as diabetes and hypertension.

By examining a person's triglyceride and high-density lipoprotein cholesterol levels, it is usually able to estimate whether they have a high amount of sdLDL particles. Typically, these tests are done as part of a lipid profile. People with high triglycerides and low HDL-C have higher levels of sdLDL. More sdLDL is connected with a triglyceride level greater than 120 mg/dL and an HDL-C level less than 40 mg/dL in men and less than 50 mg/dL in women.

Other lipoprotein particles, such as HDL and VLDL, can also be subfractionated, however these tests are generally utilized in research settings and are not discussed on this page.

Lab tests often ordered with a Lipoprotein Fractionation test:

  • Lipid Panel
  • HDL Cholesterol
  • LDL Cholesterol
  • Direct LDL
  • Apolipoprotein A-1
  • Apolipoprotein B
  • Lipoprotein (a)
  • Triglycerides
  • Homocysteine
  • Hs-CRP
  • VAP

Conditions where a Lipoprotein Fractionation test is recommended:

  • Cardiovascular Disease
  • Heart Disease

How does my health care provider use a Lipoprotein Fractionation test?

Low-density lipoprotein particle testing determines the number, size, density, and/or electrical charge of LDL particles. It may be useful in determining cardiac risk in patients with a personal or family history of heart disease at a young age, particularly if their total cholesterol and LDL cholesterol levels are not markedly increased. LDL subfraction testing is usually done in conjunction with or after a lipid profile.

While the LDL-C test is a good predictor of cardiovascular disease risk for many people, research has indicated that certain persons with healthy LDL-C levels nonetheless have an increased risk of CVD. Similarly, even if their LDL-C is at a safe level, people with chronic diseases like diabetes may be at higher risk. The quantity of LDL particles and/or their size has been recommended as an additional factor to consider when assessing CVD risk in these populations. Lipoprotein subfraction testing may be done in these situations to further assess a person's CVD risk.

LDL-P is sometimes requested to see how well a treatment is working at reducing the quantity of tiny, dense LDL particles.

LDL subfraction testing has been employed in clinical settings, although VLDL or HDL subfraction testing is primarily used in research. This is because LDL cholesterol has been established as the key risk factor for heart disease, and LDL assessment has received increased attention in research and development.

What do my Lipoprotein Fractionation test results mean?

The method and reporting format utilized in an LDL-P test, as well as the person's total cholesterol, LDL-C, VLDL, and/or HDL cholesterol, are all reflected in the results. Because different methods divide subclasses based on different physical qualities, results may not be immediately comparable from one method to the next or from one laboratory to the next.

Usually, the result is evaluated in context of a lipid profile and the risk it implies:

  • If a person has a high number of mostly tiny, dense LDL and an elevated LDL-P, this result will enhance the person's risk of cardiovascular disease beyond the risk associated with total LDL.
  • If a person only has large, fluffy LDL and a low LDL-P, this discovery will not put them at any greater risk.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.


Serum Triglyceride analysis has proven useful in the diagnosis and treatment of patients with diabetes mellitus, nephrosis, liver obstruction, other diseases involving lipid metabolism, and various endocrine disorders. In conjunction with high density lipoprotein and total serum cholesterol, a triglyceride determination provides valuable information for the assessment of coronary heart disease risk.

Description: A Vitamin D test is a blood test used to determine if you have a Vitamin D deficiency and to monitor Vitamin D levels if you are on supplementation.

Also Known As: Ergocalciferol Test, Vitamin D2 Test, Cholecalciferol Test, Vitamin D3 Test, Calcidiol Test, 25-hydroxyvitamin D Test, Calcifidiol Test, 25-hydroxy-vitamin D Test

Collection Method: Blood Draw

Specimen Type: Serum

Test Preparation: Fasting preferred, but not required.

When is a Vitamin D test ordered:

When calcium levels are inadequate and/or a person exhibits symptoms of vitamin D deficiency, such as rickets in children and bone weakening, softness, or fracture in adults, 25-hydroxyvitamin D is frequently ordered to rule out a vitamin D deficit.

When a person is suspected of having a vitamin D deficiency, the test may be requested. Vitamin D deficiency is more common in older folks, people who are institutionalized or homebound and/or have minimal sun exposure, people who are obese, have had gastric bypass surgery, and/or have fat malabsorption. People with darker skin and breastfed babies are also included in this category.

Before starting osteoporosis medication, 25-hydroxyvitamin D is frequently requested.

What does a Vitamin D blood test check for?

Vitamin D is a group of chemicals that are necessary for the healthy development and growth of teeth and bones. The level of vitamin D in the blood is determined by this test.

Vitamin D is tested in the blood in two forms: 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D. The primary form of vitamin D found in the blood is 25-hydroxyvitamin D, which is a relatively inactive precursor to the active hormone 1,25-dihydroxyvitamin D. 25-hydroxyvitamin D is routinely evaluated to assess and monitor vitamin D status in humans due to its longer half-life and higher concentration.

Endogenous vitamin D is created in the skin when exposed to sunshine, whereas exogenous vitamin D is taken through foods and supplements. Vitamin D2 and vitamin D3 have somewhat different molecular structures. Fortified foods, as well as most vitamin preparations and supplements, include the D2 form. The type of vitamin D3 produced by the body is also used in some supplements. When the liver and kidneys convert vitamin D2 and D3 into the active form, 1,25-dihydroxyvitamin D, they are equally effective.

Some tests may not differentiate between the D2 and D3 forms of vitamin D and just report the total result. Newer methods, on the other hand, may record D2 and D3 levels separately and then sum them up to get a total level.

Vitamin D's major function is to assist balance calcium, phosphorus, and magnesium levels in the blood. Vitamin D is necessary for bone growth and health; without it, bones become fragile, misshapen, and unable to mend themselves properly, leading to disorders such as rickets in children and osteomalacia in adults. Vitamin D has also been proven to influence the growth and differentiation of a variety of other tissues, as well as to aid in immune system regulation. Other illnesses, such as autoimmune and cancer, have been linked to vitamin D's other roles.

According to the Centers for Disease Control and Prevention, two-thirds of the US population has adequate vitamin D, while one-quarter is at risk of inadequate vitamin D and 8% is at risk of insufficiency, as defined by the Institute of Medicine's Dietary Reference Intake.

The elderly or obese, persons who don't receive enough sun exposure, people with darker skin, and people who take certain drugs for lengthy periods of time are all at risk of insufficiency. Adequate sun exposure is usually defined as two intervals of 5-20 minutes each week. Vitamin D can be obtained through dietary sources or supplements by people who do not get enough sun exposure.

This test has 3 Biomarkers

  • Vitamin D Total which is a combined measurement of Vitamin D, 25-Oh, D2 and Vitamin 25-Oh, D3
  • Vitamin D, 25-Oh, D2 which is a measurement of ergocalciferol Vitamin D, which is Vitamin D obtained through plant sources. 
  • Vitamin D, 25-Oh, D3 which is a measurement of cholecalciferol Vitamin D, which is Vitamin D obtained through animal sources.

Lab tests often ordered with a Vitamin D test:

  • Complete Blood Count
  • CMP
  • Iron and TIBC
  • Calcium
  • Phosphorus
  • PTH
  • Magnesium

Conditions where a Vitamin D test is recommended:

  • Kidney Disease
  • Osteoporosis
  • Lymphoma
  • Cystic Fibrosis
  • Autoimmune Disorders
  • Celiac Disease
  • Malabsorption
  • Malnutrition

Commonly Asked Questions:

How does my health care provider use a Vitamin D test?

Determine whether a deficit or excess of vitamin D is causing bone weakening, deformity, or improper calcium metabolism.

Because PTH is required for vitamin D activation, it can aid in diagnosing or monitoring problems with parathyroid gland function.

Because vitamin D is a fat-soluble vitamin that is absorbed from the intestine like a fat, it can help monitor the health of people with conditions that interfere with fat absorption, such as cystic fibrosis and Crohn's disease.

People who have had gastric bypass surgery and may not be able to absorb adequate vitamin D should be closely monitored.

When vitamin D, calcium, phosphorus, and/or magnesium supplementation is suggested, it can help assess the success of the treatment.

What do my Vitamin D results result mean?

Despite the fact that vitamin D techniques differ, most laboratories use the same reference intervals. Because toxicity is uncommon, researchers have focused on the lower limit and what cut-off for total 25-hydroxyvitamin D shortage implies.

A low blood level of 25-hydroxyvitamin D could indicate that a person isn't getting enough sunlight or dietary vitamin D to meet his or her body's needs, or that there's an issue with absorption from the intestines. Seizure medications, notably phenytoin, might occasionally interfere with the liver's generation of 25-hydroxyvitamin D.

Vitamin D insufficiency has been linked to an increased risk of some malignancies, immunological illnesses, and cardiovascular disease.

Excessive supplementation with vitamin pills or other nutritional supplements frequently results in a high level of 25-hydroxyvitamin D.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.



The Differences Between Fast Metabolism and Slow Metabolism Tests

If you've got a metabolism that you just can't figure out, we understand. Everyone's metabolism is different. Plus, your metabolism can change over time and often does. You've probably noticed that you gain weight easier now that you're older than you did when you were in your teens, and this is completely normal. In fact, this is typical for many people. However, if you're a younger person and gain weight easily, there's no need to fret, as that's also common.

You've probably heard that people with a fast metabolism can eat anything and get away with it -- but why is this? How does a person's metabolism work? What is metabolism testing? We know you probably have a lot of questions, so without any further ado let's dive in. 

Fast Metabolism Vs. Slow Metabolism

Metabolism is a term that's thrown around quite a bit, but for all intents and purposes, it describes the internal process of how your body uses energy and gets rid of calories. This includes blood circulating through the body, breathing, and your organs functioning. A person with a fast metabolism might have a body with more muscle mass that uses more energy to perform everyday tasks than someone with a slow metabolism, meaning they need to consume more calories to keep everything stable. Think of a fast metabolism as a gas-guzzling pickup truck and a slow metabolism as a fuel-efficient smart car -- the pickup truck needs more fuel to function!

Someone with a fast metabolism burns calories faster naturally, while someone with a slow metabolism burns them more slowly. However, most people have average metabolisms, meaning they align with the 2,000 calorie diet which is recommended for most people. 

What this means is two people with different metabolisms who eat the same amount of food will absorb calories differently. A young, busy athlete might need to eat twice as much as someone ten years older who lives a sedentary lifestyle to maintain the same amount of weight as them. However, age plays a key role in how your metabolism functions. Typically speaking, the older you get, the more your metabolism slows down. 

What Determines the Kind of Metabolism You Have? 

This news might be disappointing, but your metabolism is mostly influenced by genetics. Since you can't do much to change your DNA, there's no real way to alter how your metabolism functions. However, diet and exercise play huge roles in how your body absorbs nutrients and converts food into energy, so knowing what kind of metabolism you have can make it much easier to achieve your ideal weight or maintain a healthy lifestyle -- regardless of the metabolism you were born with. 

How Can You Find Out What Kind of Metabolism You Have?

If you find yourself full after smaller meals or don't seem to need to eat that much to live a normal life, then you might have a slow metabolism. The same is true if you don't feel like you eat that much but still struggle with weight gain or find it difficult to lose weight. However, it would be best to consider how much exercise you get and examine the amount of calories you're taking in on average. You might not need that much fuel because you don't use that much energy on a regular basis. However, if you're constantly hungry and can snack all day and never seem to gain any weight, then you probably have a faster metabolism. 

Metabolism tests are, without a doubt, the easiest way to know for sure what kind of metabolism you're working with. While it's fairly obvious for most people, sometimes other factors get in the way and make it difficult to know for sure. Factors that can affect how your metabolism functions include the kind of food you're eating, the amount of activity you perform every day, and any illnesses or medical conditions you might have. Metabolism tests can set your mind at ease and confirm whether you have a fast metabolism or a slow one. 

What Kinds of Metabolic Testing Is There? 

Lab Tests

While home tests might seem to be a convenient option when it comes to conducting any sort of test, this isn't really the case. They come with a list of problems. First and foremost, they are not entirely reliable. The samples are not collected by trained technicians in an appropriate environment. It's very easy for at-home tests to show incorrect results. Second, those tests are not generally accepted by doctors and hospitals. If you were to show those results to your doctor, they would most likely recommend that you repeat the testing with a blood draw at a national lab. Third, only a limited number of tests are available that restrict the insight into your health.

Our comprehensive metabolic testing solution does not suffer from any of these problems. All of our tests are considered highly accurate and reliable. They are also accepted by all doctors and health organizations, unlike at-home tests. Why? Because the samples are gathered and tested in the same way as doctors expect them to be. All samples are handled by certified professionals in a certified institution. All of those certifications help guarantee quality and accuracy.

Metabolic Discovery Panel - It contains 8 tests with 68 biomarkers. This comprehensive set of tests helps assess your metabolism. Are you storing too much fat and sugar or perhaps too little? Are you insulin resistant with subsequent inflammation? You can run this panel to discover whether your diet, fitness, and nutritional habits are providing you the metabolic health and longevity you deserve. Don't settle for one-size-fits-all health advice. Your diet, fitness lifestyle, and nutritional intake should improve your energy, weight, and inner metabolic health. But don't merely trust it's working. Run this Metabolic Discovery panel quarterly to take a snapshot of your insulin response, blood sugars, and lipids and adjust your lifestyle based upon your results.

  • CBC (includes Differential and Platelets)
  • Comprehensive Metabolic Panel (CMP) includes fasting Glucose
  • Ferritin
  • Hemoglobin A1c
  • Insulin
  • Lipid Panel with Ratios
  • Vitamin B12 (Cobalamin)
  • Vitamin D, 25-Hydroxy, Total, Immunoassay

The Metabolic Discovery Comprehensive Panel - It contains 15 tests with 78 biomarkers and all of the tests in the Metabolic Discovery Panel, plus:

  • Adiponectin
  • Iron and Total Iron Binding Capacity (TIBC)
  • Leptin
  • T3, Free
  • T4, Free
  • TSH

Metabolism Lab Panel - it contains 6 tests with 27 biomarkers.

  • Fasting Insulin
  • Glucose (In CMP)
  • Hemoglobin A1c
  • TSH
  • Free T3
  • Free T4
  • Comprehensive Metabolic Panel (CMP)

RMR Testing

There are various methods used to test what kind of metabolism a person has. These include determining a person's resting metabolic rate, or RMR. This refers to how many calories your body burns while at rest. Someone with a faster metabolism will burn more calories while doing nothing at all. 

VO2 Max Testing

Another kind of metabolic testing measures your maximum volume of oxygen, or VO2 Max, which refers to how your body utilizes oxygen while exercising. An athletic person will have a higher VO2 max and therefore have a higher capacity for high-intensity exercise, while someone who doesn't exercise all that much won't use oxygen as effectively. 

Lactate Threshold Testing

When your muscles become fatigued, this is due to a buildup of lactic acid, which your body makes when it can't use oxygen to produce energy. Usually, a buildup occurs during exercise. While your body naturally eliminates lactic acid, when exercising you will eventually reach a point where your body is making too much to be eliminated, causing you to become tired and your muscles to feel strained, stiff, and tired. Your lactate threshold refers to when your body is producing lactic acid in the blood faster than it can eliminate it. 

How Do I Test My Metabolism? 

Ulta Lab Tests offers highly accurate and reliable tests so you can make informed decisions about your health.

  • Secure and confidential results
  • No insurance referral is needed
  • Affordable pricing
  • 100% satisfaction guarantee

Order your metabolism lab tests today, and your results will be provided to you securely and confidentially online in 24 to 48 hours for most tests.

Take control of your health today with Ulta Lab Tests.