All Digestive System Tests

Order our digestive system tests to help diagnose intestine, colon, pancreas, and liver problems to achieve optimal gastrointestinal health.

Don't overlook your gastrointestinal health. With so much focus on cancer, heart attacks, and strokes, it's easy for your gut health to get lost in the shuffle.  However, it's important to have digestive lab tests done regularly. Catching digestive system conditions before they start is the best form of medicine.

The digestive system is a complex and vital part of the body and is responsible for breaking down food for energy or building blocks for cells. Digestive lab testing can provide insight into how the gastrointestinal tract functions and potentially diagnose ... See more

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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
Also Known As: Lactate Test, L-Lactate Test, Lactate Plasma Test, Lactate Blood Test

 The Qualitative Lactoferrin Stool test is a diagnostic tool that examines a stool sample for the presence of lactoferrin, an iron-binding protein found predominantly in white blood cells called neutrophils. Elevated levels of lactoferrin in the stool can indicate the presence of inflammation in the intestines.
: Stool/Feces

: Stool/Feces

: Serum

: Random

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

Most Popular

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
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
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
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
Also Known As: MMA Test

: Varied

: Serum

The Myeloperoxidase (MPO) Antibody Test detects autoantibodies against MPO, often associated with ANCA-associated vasculitis, including microscopic polyangiitis and granulomatosis with polyangiitis. Elevated MPO antibodies may indicate inflammation of blood vessels, kidneys, or lungs. Physicians order this blood test to support diagnosis, monitor disease activity, and guide treatment decisions for autoimmune and systemic vasculitis disorders.

: Serum
Also Known As: Myeloperoxidase Antibody Test

: Urine

: Stool/Feces

: Plasma-Unspecified Vial Pour

The Parietal Cell Antibody Test detects autoantibodies against stomach parietal cells, which produce intrinsic factor and stomach acid. Their presence is strongly associated with pernicious anemia, vitamin B12 deficiency, and autoimmune gastritis. Doctors use this blood test to help diagnose the cause of anemia, investigate digestive issues, and evaluate patients with suspected autoimmune disorders affecting stomach function and nutrient absorption.

: Serum
Also Known As: Gastric Parietal Cell Antibody Test, Anti-Parietal Cell Antibody Test, Anti-GPA Test, AGPA Test, APCA Test

The Prealbumin Test measures levels of prealbumin, a protein made by the liver that reflects short-term nutritional status. Low levels may indicate malnutrition, liver disease, inflammation, or chronic illness, while high levels may be linked to kidney disease or steroid use. Doctors use this test to assess protein-calorie nutrition, monitor patients receiving nutritional support, and guide treatment for conditions affecting metabolism and recovery.

: Serum
Also Known As: Thyroxine-binding Prealbumin Test, Transthyretin Test

 The Protein Total and Protein Electrophoresis Random Urine test measures the total amount of proteins in a random urine sample and separates these proteins based on their size and charge. Electrophoresis, in this context, is a laboratory technique that uses an electric field to move and separate proteins in a medium, usually a gel. The resulting pattern can help identify abnormal protein production and differentiate between various types of proteins present in the urine.

The Protein Total and Albumin Test measures overall protein levels and albumin, the main blood protein made by the liver. Abnormal levels may indicate liver disease, kidney disorders, malnutrition, or chronic inflammation. Doctors order this test for patients with swelling, fatigue, or abnormal lab results. Results provide critical insight into nutritional status, liver and kidney function, and help guide diagnosis and treatment of metabolic or chronic conditions.

: Serum

: Serum

The Prothrombin with INR and Partial Thromboplastin Times Test measures how long blood takes to clot by evaluating PT, INR, and aPTT. Abnormal results may indicate clotting disorders, liver disease, vitamin K deficiency, or risk of bleeding and thrombosis. Doctors use this test to monitor patients on blood thinners like warfarin, assess unexplained bleeding, and evaluate clotting function. It provides critical insight into coagulation and overall blood health.

Also Known As: PT with INR and aPTT Test, PT/INR and PTT Test

 The Red Blood Cell (RBC) Count test is a blood test that quantifies the number of red blood cells (RBCs) present in a specific volume of blood. Red blood cells are essential for life, as they carry oxygen from the lungs to the rest of the body and transport carbon dioxide from the body back to the lungs for exhalation.
: Blood

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