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Digestive System Tests

Thank you for shopping our Digestive Systems Tests. The digestive system, also known as the gastrointestinal system, is a complex set of organs that transport and process the food we eat and transform it into energy for our metabolism to consume. Digestive system tests can help determine whether or not this essential system is working properly and diagnose problems or gastrointestinal disorders of the pancreas, intestine, colon and liver. Order a digestive system blood test today to ensure optimal digestive health of your gastrointestinal tract!

Browse Digestive System Tests Subcategories

Choose One Lab: LABCORP (LC) or QUEST (QD) or ALL

Home Test Kits

Walk-In Lab is contracted with LabCorp (LC) and Quest Diagnostics (QD) for routine lab testing. Please choose LC or QD to complete your order. If you prefer to receive a kit by mail for specimen collection, please see our Home Test Kits. LC and QD tests must be ordered separately.

LabCorp: Online lab testing is prohibited in MA, MD, NY, NJ and RI.

Quest Diagnostics: Online lab testing is prohibited in AZ, NY, NJ and RI.

  • Hepatic Function (Liver) Panel Blood Test

    The Hepatic Function (Liver) Panel Blood Test measures different enzymes, proteins, and other substances made by the liver.
  • Liver Profile #1 Baseline Blood Test Panel

    The Liver Profile #1 Baseline Blood Test Panel consists of 4 comprehensive blood tests that evaluate the overall health of the liver.
  • Lipase Serum Test

    The Lipase Serum Test monitors pancreatic functions.
  • Anemia #1 Baseline Blood Test Panel

    The Anemia #1 Baseline Blood Test Panel measures biomarkers in a blood sample to help screen for an iron deficiency and other causes of anemia.
  • Carcinoembryonic Antigen (CEA) Blood Test

    This CEA Blood Test measures the protein in the blood called carcinoembryonic antigen (CEA). This protein can be found on some cancer cell types. 
  • Amylase Serum Test

    An amylase serum test is used to diagnose pancreatitis or other pancreatic diseases.
  • Hepatitis B Surface Antibody Blood Test, Quantitativ...

    The Hepatitis B Surface Antibody (HBsAB) Blood Test, Quantitative, detects and measures HBsAB antibodies in a blood sample to screen for the Hepatitis B virus.
  • Candida Antibodies Blood Test, IgA, IgG, and IgM, EL...

    The Candida Antibodies Blood Test, IgG, IgA, and IgM, ELISA detects antibodies that the body produces in response to Candida albicans.
  • Ova and Parasites Examination Stool Test

    The Ova and Parasites Examination Stool Test detects pathogens in a stool sample to screen for a parasitic intestinal infection.
  • Gamma-Glutamyl Transferase (GGT) Blood Test

    The Gamma-Glutamyl Transferase (GGT) Blood Test measures GGT levels in the blood to screen for liver or bile duct disease.
  • C-Peptide Serum Test

    The C-Peptide Serum Test helps determines how much insulin the pancreas is producing.
  • Gluten Blood Test

    The Gluten Blood Test measures the IgE antibody levels to screen for adverse reactions to gluten proteins found in wheat.
  • Hepatitis C Antibody Blood Test

    The Hepatitis C Antibody Blood Test helps detect and diagnose acute liver infection and inflammation due to the Hepatitis C virus (HCV).
  • Ammonia Plasma Test

    March Special: Save 15% with coupon code HEALTHY24. The Ammonia Plasma Test measures ammonia levels in the blood to screen for hyperammonemia.
  • Helicobacter pylori ( H. Pylori) Antigen Stool Test

    This H. Pylori Antigen Stool Test establishes the presence and possible etiologic role of Helicobacter pylori in cases of chronic gastric ulcer, gastritis, duodenal ulcer, dyspepsia, etc.
  • Hepatitis B Surface Antigen Blood Test

    The Hepatitis B Surface Antigen Blood Test detects HBV surface antigens in a blood sample to screen for acute and chronic HBV infections.
  • Toxic Metals 24-Hour Urine -Doctor's Data Test Kit

    The Urine Toxic Metals, 24-Hour Test Kit evaluates exposure to potentially toxic elements and monitors metal detoxification therapy's effectiveness in a urine sample over 24 hours.
  • Tissue Transglutaminase (tTG) Blood Test, IgA

    A tTG blood test detects antibodies to aid in the diagnosis of gluten-sensitive enteropathy (GSE), such as celiac disease and dermatitis herpetiformis.
  • Helicobacter pylori (H. pylori) UREA Breath Test

    The Helicobacter Pylori (H. pylori) Urea Breath Test detects H. pylori bacteria by measuring the carbon dioxide in a patient's breath after they consume a urea solution.
  • Calprotectin Stool Test

    A calprotectin stool test is used to diagnose inflammatory bowel disease (IBD), including Chron's disease and ulcerative colitis, or to differentiate IBD from irritable bowel syndrome (IBS).
  • Occult Blood, Fecal, Immunoassay Test

    The Occult Blood, Fecal, Immunoassay Test detects blood hidden in a stool sample to help screen for colorectal cancer.
  • Beta 2 Microglobulin Serum Test

    March Special: Save 15% with coupon code HEALTHY24. The Beta 2 Microglobulin Serum Test helps evaluate the severity and prognosis of certain cancers and screens for kidney disorders.
  • Transferrin Blood Test

    The Transferrin Blood Test is used to screen for iron deficiency or excess and diagnose anemia by measuring transferrin levels in the blood.
  • Stool Culture Test

    A Stool Culture Test detects the presence of disease causing bacterial organisms including Salmonella, Shigella, Campylobacter, and Enterohemorrhagic E coli in the stool and aid in the diagnosis of Typhoid Fever, Enteric Fever, Bacillary Dysentery, and Salmonella infection.
  • Giardia Lamblia Stool Test, EIA

    The Giardia Lamblia Stool Test, EIA is used in the Rapid detection of the Giardia lamblia parasite.
  • Comprehensive Stool Analysis plus Parasitology x3 (C...

    This CDSA/P test is performed to identify abnormal intestinal microflora, but does not directly assess abnormal digestion/absorption, inflammation or other specific aspects of gastrointestinal health.
  • Liver Profile #3 Extreme Blood Test Panel

    The Liver Profile #3 Extreme Blood Test Panel consists of 9 comprehensive blood tests that evaluate the overall health of the liver.
  • Gastrin Blood Test

    March Special: Save 15% with coupon code HEALTHY24. The Gastrin Blood Test is used to detect an overproduction of gastrin, to help diagnose Zollinger-Ellison syndrome and G-cell hyperplasia, and to monitor for recurrence of a gastrin-producing tumor (gastrinoma).
  • Parasite Examination (Malaria) Blood Test

    The Parasite Examination (Malaria) Blood Test helps to diagnose malaria.
  • Alpha-1 Antitrypsin Blood Test

    The Alpha-1 Antitrypsin (AAT) Blood Test is used to screen for a deficiency of the AAT protein by measuring AAT levels in the blood.
  • Gastrointestinal (GI) Effects Comprehensive Stool Pr...

    The GI Effects Comprehensive Stool Profile is the stool test of choice for optimizing clinical value in managing gut health.
  • Hepatitis B Surface Antibody Blood Test, Qualitative

    The Hepatitis B Surface Antibody Blood Test, Qualitative detects HBsAB antibodies in a blood sample to screen for the Hepatitis B virus.
  • Gliadin Antibody Profile Blood Test, IgA and IgG

    A Gliadin Antibody Profile Blood Test, IgA and IgG is used in the detection of gliadin antibodies aids in the diagnosis and monitoring of certain gluten-sensitive enteropathies, such as celiac disease and dermatitis herpetiformis.
  • Potassium Blood Test, RBC

    March Special: Save 15% with coupon code HEALTHY24. The Potassium Blood Test, RBC provides a measurement of intracellular Potassium levels which can indicate deficiency sooner than an ordinary blood test.
  • Celiac Disease Comprehensive Antibody Profile Blood ...

    The Celiac Disease Comprehensive Antibody Profile Blood Test measures the IgA or IgG antibody levels to diagnose celiac disease and monitor response to dietary changes.
  • Clostridium difficile Toxin B Stool Test, Qualitativ...

    The clostridium difficile toxin B stool test is useful in diagnosing clostridium difficile toxin B.
  • Prealbumin Blood Test

    March Special: Save 15% with coupon code HEALTHY24. The Prealbumin Blood Test measures prealbumin levels in the blood to diagnose and monitor problems with nutritional health.
  • Toxic Metals Random Urine - Doctor's Data Test Kit

    The Urine Toxic Metals profile is a complete assessment of urine metal excretion. This test is useful for anyone undergoing heavy metal detoxification therapy, or who wants to assess current heavy metal exposure. Doctors often use this test for excretion of heavy metals via heavy metal detoxification therapy.
  • Ova and Parasites, Concentrate and Permanent Smear, ...

    The Ova and Parasites, Concentrate and Permanent Smear, 3 Specimens Stool Test detect pathogens in three separate stool samples to screen for a parasitic intestinal infection.
  • Comprehensive Stool Analysis (CDSA) - Doctor's Data ...

    This CDSA test is performed to identify abnormal intestinal microflora but does not directly assess abnormal digestion/absorption, inflammation or other specific aspects of gastrointestinal health.
  • Inflammatory Bowel Disease (IBD) Profile Blood Test

    The IBD blood test is used to rule out Crohn's disease and ulcerative colitis.
  • Amylase Urine Test, Random

    The Amylase Urine Test, Random, helps diagnose and monitor pancreatitis and other pancreatic diseases.
  • Celiac Disease Profile Blood Test

    The Celiac Disease Profile Blood Test measures the IgA antibody levels to help diagnose celiac disease and monitor response to a gluten-free diet.
  • Urine Toxic and Essential Elements Test Kit - Doctor...

    The Urine Toxic & Essential Elements Test Kit evaluates exposure to potentially toxic elements and monitors metal detoxification therapy's effectiveness.
  • Hepatitis A Antibody Blood Test, Total

    The Hepatitis A Antibody Blood Test, Total, detects both IgM and IgG antibodies to help diagnose hepatitis A and assess whether an individual has immunity to this disease. 
  • Potassium Urine Test, 24-Hour

    March Special: Save 15% with coupon code HEALTHY24. A 24-hour Potassium Urine Test is used to detect abnormal concentrations of potassium, including high potassium (hyperkalemia) and low potassium (hypokalemia).
  • Fecal Fat Stool Test, Qualitative

    A fecal fat stool test, qualitative is useful in determining the presence or absence of excess fat in the stool. 
  • Candida Antibodies Blood Test, IgG, ELISA

    The Candida Antibodies Blood Test, IgG, ELISA, detects antibodies the body produces in response to Candida albicans.
  • NutrEval Plasma and Urine Test Plus Vitamin D - GENO...

    NutrEval FMV® provides a framework of core nutrients in 5 key areas: Antioxidants, B Vitamins, Digestive Support, Essential Fatty Acids, and Minerals plus Vitamin D.  Note: This is a pre-paid shipping test kit that will be mailed and it requires a blood draw. Please Click Here to locate a lab for specimen collection.
  • GI360™ Profile, Stool - Doctor's Data Test Kit

    The GI360™ can identify the presence of pathogenic viruses, bacteria, and parasites using multiplexed, real-time PCR.
  • Celiac Disease HLA DQ Association Blood Test

    The Celiac Disease HLA DQ Association Blood Test detects celiac disease-associated alleles that predispose to the disorder to assess the risk of CD but is not diagnostic of celiac disease.
  • Oxalate Urine Test, Quantitative, 24-Hour

    March Special: Save 15% with coupon code HEALTHY24. The Oxalate Urine Test, Quantitative, 24-Hour, measures oxalate in the urine over 24 hours to help screen for stone formation or hyperoxaluria.
  • Casein Allergy Blood Test, IgE

    The Casein Allergy Blood Test measures IgE antibody levels in the blood to screen for an allergy to the milk protein casein.
  • Liver-Kidney Microsomal (LKM) Antibodies Serum Test

    The Liver-Kidney Microsomal (LKM) Antibodies Serum Test detects LKM antibodies in the blood to screen for autoimmune hepatitis.
  • Hepatitis B Core Antibody Blood Test, IgM

    The Hepatitis B Core Antibody Total Blood Test, IgM, detects IgM anti-HBc antibodies to screen for an acute HBV infection.
  • ION Profile with 40 Amino Acids, Blood and Urine - G...

    The ION® Profile with 40 Amino Acids, Blood & Urine Test Kit helps identify nutrient deficiencies that can lead to complex chronic conditions.  Note: This is a pre-paid shipping test kit that will be mailed and it requires a blood draw. Please Click Here to locate a lab for specimen collection.
  • Scleroderma (SCL-70) Blood Test

    The Scleroderma (Scl-70) Antibody test measures the Scl-70 antibodies in the blood to help diagnose progressive systemic sclerosis (scleroderma).
  • Hepatitis C Virus (HCV) Blood Test, Quantitative, Re...

    The Hepatitis C Virus (HCV) Blood Test, Quantitative, Real-Time PCR, detects and measures HCV RNA levels in the blood to monitor treatment response.
  • White Blood Cells (WBC) Stool Test

    A WBC test or fecal leukocytes stain is ordered to assist in differential diagnosis of diarrheal disease and looks for white blood cells in stool.
  • Red Blood Cell (RBC) Elements Blood Test - Doctor's ...

    A RBC Elements Blood Test provides a reliable means of identifying short-term toxic element exposure and evaluating intracellular mineral nutrient status. Results help to quickly pinpoint imbalances underlying conditions such as chronic fatigue, depression, ADHD, and cardiovascular disease.  Note: This is a pre-paid shipping test kit that will be mailed and it requires a blood draw. Please Click Here to locate a lab for specimen collection.
  • GI360™ Essentials Profile, Stool - Doctor's Data T...

    The GI360™ essentials profile is an innovative, comprehensive, and clinically-applicable stool profile, utilizing multiplex PCR molecular technology coupled with growth-based culture and ID by MALDI-TOF, sensitive biochemical assays and microscopy to detect and assess the status of pathogens, viruses, parasites, and bacteria that may be contributing to acute or chronic gastrointestinal symptoms and disease.
  • Saccharomyces cerevisiae Antibodies (ASCA) (IgG) Ser...

    A Saccharomyces cerevisiae Antibodies Serum Test is intended to aid in the diagnosis of patients with Crohn's disease.
  • Amino Acids 24-Hour Urine - Doctor's Data Test Kit

    The amino acid (AA) 24-hour urine aids in the identification of dietary protein adequacy and amino acid balance, gastrointestinal dysfunctions, forms of protein intolerance, vitamin and mineral deficiencies, renal and hepatic dysfunction, psychiatric abnormalities, susceptibility to inflammatory response and oxidative stress, reduced detoxification capacity and many other inherent and acquired disorders in AA metabolism.
  • Hepatitis Be Antigen Blood Test

    The Hepatitis Be Antigen Blood Test detects HBeAg in the blood to monitor the infection status, infectivity, and treatment of chronic hepatitis B patients.
  • Magnesium Urine Test, 24-Hour

    March Special: Save 15% with coupon code HEALTHY24. The Magnesium Urine Test measures the amount of magnesium (an electrolyte) in urine collected over 24 hours.  This test is used to evaluate and manage electrolyte problems in the body.
  • Endomysial Antibody Blood Test, IgA

    Tissue transglutaminase is the autoantigen recognized by endomysial antibody in celiac disease.
  • GI Pathogen Profile, Multiplex PCR Stool Kit - Docto...

    The GI Pathogen Profile, multiplex PCR Kit is used to test for the presence of viral infections or to differentiate between possible diarrheagenic strains of E. coli.
  • Bacteriology Culture, Stool - Doctor's Data Kit

    This Bacteriology Culture, Stool - Doctor's Data Kit helps detect beneficial and imbalanced flora and infectious pathogens.
  • GI360™ Microbiome, Stool - Doctor's Data Test Kit

    The GI360™ microbiome profile is a gut microbiota DNA analysis tool that identifies and characterizes the abundance and diversity of more than 45 targeted analytes.
  • Celiac Disease Profile II Blood Test

    The Celiac Disease Profile II Blood Test measures the IgA antibody levels to help diagnose celiac disease and monitor response to a gluten-free diet.
  • Indican Urine Test

    The Indican Urine test measures the indican levels in urine samples to help screen for potential digestive disorders.
  • Hepatitis B Core Antibody Differentiation Blood Test...

    The Hepatitis B Core Antibody Differentiation Blood Test, IgG and IgM assesses Hepatitis B virus infection.
  • CICA: Celiac, IBS, and Crohn's Full Array - ALCAT Te...

    The CICA evaluates a patient’s genetic risk for celiac disease, serum markers associated with active celiac disease process, and genetic serum markers associated with Crohn’s disease, and serological markers for diminished antigen exclusion in the gut.  Note: This is a pre-paid shipping test kit that will be mailed and it requires a blood draw. Please Click Here to locate a lab for specimen collection.
  • Amino Acids FMV - Doctor's Data Test Kit

    The amino acid (AA) FMV test aids in the identification of dietary protein adequacy and amino acid balance, gastrointestinal dysfunctions, forms of protein intolerance, vitamin and mineral deficiencies, renal and hepatic dysfunction, psychiatric abnormalities, susceptibility to inflammatory response and oxidative stress, reduced detoxification capacity and many other inherent and acquired disorders in AA metabolism.   
  • Hepatitis Be Antibody Blood Test

    The hepatitis Be antibody blood test is a differential diagnosis, staging, and prognosis of hepatitis B infection.
  • Whole Blood Elements Kit - Doctor's Data Kit

    The Whole Blood Elements Kit is an assessment of element levels in whole blood is a valuable tool for identification of dietary adequacy, gastrointestinal, renal and endocrine functions, and excess or deficiency conditions.  Note: This is a pre-paid shipping test kit that will be mailed and it requires a blood draw. Please Click Here to locate a lab for specimen collection.
  • Gut Pathogen Profile-Genova Test Kit

    The Gut Pathogen Profile detects pathogenic or potentially pathogenic organisms such as parasites, bacteria, and yeast in a stool sample.
  • Beta-glucuronidase, Stool-Doctor's Data Test Kit

    This Beta-glucuronidase, Stool-Doctor's Data Test Kit measures β-G levels in a stool sample and helps screen for an imbalanced intestinal microbiome.

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