All Digestive System Tests

“All Digestive System Tests” brings your core GI lab options into one place. A proactive plan starts by matching your question—infection, inflammation, bleeding, malabsorption, reflux/dyspepsia, or pancreatic issues—to the right stool, breath, and blood tests. Noninvasive stool markers (calprotectin/lactoferrin) help separate inflammatory bowel disease (IBD) from non-inflammatory causes like IBS. Pathogen PCR and C. difficile testing identify infections fast. For upper-GI concerns, H. pylori stool antigen or urea breath tests evaluate ulcer risk. Chronic diarrhea, weight loss, or greasy ... See more

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The Intrinsic Factor Blocking Antibody Test detects antibodies that interfere with intrinsic factor, a protein essential for vitamin B12 absorption. The presence of these antibodies is strongly associated with pernicious anemia, an autoimmune cause of B12 deficiency. Doctors use this blood test to help confirm diagnosis, distinguish the cause of anemia, and guide treatment for patients experiencing fatigue, weakness, or neurological symptoms related to low B12.

Also Known As: Intrinsic Factor Antibody Test, IF Antibody Test, IF Antibody Type 1 Test, IF Antibody Type 2 Test,

The Iron Total and Total Iron Binding Capacity (TIBC) Test measures iron levels in blood along with the blood’s ability to transport iron. It helps diagnose iron deficiency anemia, iron overload (hemochromatosis), and monitor nutritional or chronic health conditions. Low iron or high TIBC may indicate anemia, while high iron or low TIBC can suggest overload. Doctors use this test to evaluate fatigue, weakness, or other symptoms linked to iron and metabolic health.

Serum
Phlebotomist
Also Known As: Serum Iron Test, Total Iron Binding Capacity Test, TIBC Test, UIBC Test

The Iron Micronutrient Test measures blood iron levels to evaluate nutritional status and detect deficiencies or excess. Iron is essential for hemoglobin production, oxygen transport, energy metabolism, and immune function. This test helps identify anemia, iron overload, absorption issues, or dietary imbalances, supporting diagnosis and management of overall health and vital body functions.

Patient must be 18 years of age or older.
Serum
Phlebotomist
Also Known As: Serum Iron Test, Serum Fe Test

Most Popular

The Iron Total Test measures iron levels in blood to evaluate nutritional status, red blood cell production, and overall metabolic health. Abnormal levels may indicate iron deficiency anemia, chronic blood loss, or poor absorption, while high levels may suggest hemochromatosis, liver disease, or iron overload. Doctors use this test to investigate fatigue, weakness, or pallor and to monitor treatment. Results provide key insight into anemia and iron balance.

Serum
Phlebotomist
Also Known As: Serum Iron Test, Serum Fe Test

The Mineral Micronutrients Test Panel measures minerals: Calcium, Chromium, Copper, Iron, Magnesium RBC, Manganese, Molybdenum, Selenium, and Zinc to assess nutritional balance and overall health. These minerals are essential for bone strength, metabolism, energy production, antioxidant defense, and immune function. The panel helps detect deficiencies, excesses, or absorption issues, guiding health management.

Patient must be 18 years of age or older.


The Kappa Light Chain Free Serum Test measures free kappa light chains, proteins produced by plasma cells, to evaluate plasma cell disorders. Abnormal levels may indicate multiple myeloma, light chain amyloidosis, or monoclonal gammopathy of undetermined significance (MGUS). This test helps assess clonal plasma cell activity, detect kidney involvement, and support diagnosis, monitoring, and prognosis in related conditions.

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The Kappa/Lambda Light Chains, Free with Ratio Blood Test measures free kappa and lambda light chains, proteins produced by plasma cells, and calculates their ratio. Abnormal results may indicate multiple myeloma, light chain amyloidosis, or related plasma cell disorders. Doctors use this test with serum protein electrophoresis and immunofixation to detect, diagnose, and monitor disease progression or treatment response in patients with suspected blood cancers.

Serum
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Serum
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The Lactic Acid Plasma Test measures lactic acid levels in the blood to help evaluate oxygen delivery, metabolic function, and tissue health. Elevated levels may signal hypoxia, sepsis, shock, heart failure, or severe infection, while mild increases can occur with intense exercise. Doctors use this test to assess critically ill patients, guide urgent treatment, and monitor metabolic or circulatory disorders for timely medical intervention.

Plasma-Unspecified Vial Pour
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Also Known As: Lactate Test, L-Lactate Test, Lactate Plasma Test, Lactate Blood Test

The Lactoferrin Qualitative Stool Test measures lactoferrin in stool to assess intestinal inflammation. Positive results may signal inflammatory bowel disease, including Crohn’s disease or ulcerative colitis, while negative results often suggest non-inflammatory conditions. This test supports evaluation of gastrointestinal health, immune activity, and disorders affecting digestive function.

Stool/Feces
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The Lactoferrin Quantitative Stool Test evaluates stool for lactoferrin concentration to assess inflammation in the digestive tract. Increased levels are often linked to inflammatory bowel disease, including Crohn’s disease or ulcerative colitis, while low or normal levels suggest non-inflammatory conditions. This test provides insight into immune activity, gastrointestinal health, and systemic balance.

Stool/Feces
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Serum
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Most Popular

The Lipase Test measures levels of lipase, an enzyme made by the pancreas that helps digest fats. Elevated lipase may indicate acute or chronic pancreatitis, pancreatic cancer, gallbladder disease, kidney failure, or bowel obstruction. Doctors order this test to investigate severe abdominal pain, nausea, or vomiting and to monitor pancreatic disorders. Results provide vital insight into digestive health, pancreatic function, and overall gastrointestinal balance.

Serum
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Also Known As: LPS Test

The Lipid Panel with Ratios Test measures seven key markers: total cholesterol, HDL, LDL, non-HDL cholesterol, triglycerides, Chol/HDL ratio, and LDL/HDL ratio. This advanced panel evaluates cardiovascular risk by assessing cholesterol balance and fat metabolism. Doctors use it to detect high cholesterol, atherosclerosis risk, and heart disease, and to monitor treatment. Often part of routine exams, it provides insight into long-term heart and metabolic health.

Also Known As: Lipid Profile Test, Cholesterol Panel Test, Lipid Blood Test

The Lp-PLA2 Activity Test measures lipoprotein-associated phospholipase A2 enzyme activity, a marker of vascular inflammation linked to atherosclerosis and cardiovascular disease. Elevated levels may increase risk for heart attack and stroke. Doctors order this test for patients with high cholesterol, metabolic syndrome, or other risk factors. Results provide valuable insight into arterial health, helping guide prevention, treatment, and heart disease management.

Serum
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Also Known As: LpPLA2 Test, Ps-PLA2 Activity Test, Platelet-activating Factor Acetylhydrolase Test, PAF-AH Test, PLAC Test, Lipoprotein-Associated Phospholipase A2 Test

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The Magnesium Serum Test measures magnesium levels in blood to evaluate electrolyte balance, nerve and muscle function, and overall metabolic health. Abnormal levels may indicate kidney disease, malnutrition, gastrointestinal disorders, or uncontrolled diabetes. Low magnesium can cause weakness, cramps, or irregular heartbeat, while high levels may signal kidney dysfunction. Doctors use this test to diagnose deficiencies, monitor therapy, or assess chronic health conditions.

Serum
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Also Known As: Mg Test, Mag Test

The Magnesium Micronutrient RBC Test measures magnesium levels within red blood cells, providing a more accurate assessment of long-term magnesium status than serum tests. Magnesium is vital for muscle and nerve function, energy production, bone strength, and heart health. This test helps detect deficiencies or imbalances from poor diet, absorption issues, or medical conditions, supporting overall wellness.

Patient must be 18 years of age or older.
Other
Phlebotomist
Also Known As:

Magnesium Red Bood Cell Test, Mg Test, Mag Test


The Magnesium RBC Test measures magnesium inside red blood cells, providing a more accurate assessment of magnesium status than serum tests. Magnesium is vital for energy production, muscle and nerve function, heart rhythm, and bone health. Low levels may cause fatigue, cramps, arrhythmias, or weakness, while high levels may signal kidney issues. Doctors order this test to detect deficiency, monitor therapy, and evaluate overall metabolic and nutritional health.

Other
Phlebotomist
Also Known As: Magnesium Red Bood Cell Test, Mg Test, Mag Test

The Methylmalonic Acid (MMA) Blood Test measures MMA levels in the bloodstream to help detect vitamin B12 deficiency, often before anemia or neurological symptoms appear. Elevated results may indicate poor B12 absorption, pernicious anemia, or metabolic disorders. Doctors order this test when patients present with fatigue, neuropathy, or unexplained anemia. Results provide early insight into nutritional status, metabolic health, and treatment needs.

Serum
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Also Known As: MMA Test

Varied
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People tend to overlook their digestive health. With so much focus on cancer, heart attacks, and strokes, it's easy for your gut health to get lost in the shuffle. 

That's why it's vital to have digestive lab tests done regularly. Catching digestive system conditions before they start is the best way to treat them. 

If monitoring your gut health is new to you, don't worry. In this article, we're going to cover everything you need to know about your gut.  

Digestive System Conditions 

There are different kinds of gastrointestinal lab tests to monitor different enzymes and bacteria in your gut. The bacteria in your gut is known as "good bacteria." These bacteria need to maintain their presence in your stomach for the system to remain healthy in the long run. An unhealthy digestive system can give rise to the following conditions.

Celiac Disease 

This is an acute gluten sensitivity ... See more