All Digestive System Tests

The CA 19-9 Test measures levels of carbohydrate antigen 19-9 in blood, a tumor marker often elevated in pancreatic cancer and sometimes in bile duct, colorectal, or liver cancers. While not used alone for diagnosis, it helps monitor treatment, track disease progression, and detect recurrence. Elevated CA 19-9 may also occur in noncancerous conditions. Doctors use this test to support cancer management and guide therapy decisions.

The Cadmium Blood Test measures cadmium levels to assess recent exposure to this toxic heavy metal, often found in industrial settings, tobacco smoke, or contaminated food. Elevated levels may indicate acute or ongoing exposure, which can affect kidney function, bone health, and respiratory systems. This test helps evaluate occupational risk, environmental exposure, and potential health effects of cadmium toxicity.

The Cadmium Micronutrient Blood Test measures cadmium levels in the blood to assess exposure and potential toxicity. Cadmium, a heavy metal found in industrial environments, tobacco smoke, and contaminated food or water, can harm the kidneys, lungs, and bones. This test helps detect harmful exposure, guide treatment, and monitor health risks associated with cadmium accumulation.

Patient must be 18 years of age or older.

The Calprotectin Stool Test measures calprotectin, a protein released during intestinal inflammation, to help distinguish inflammatory bowel disease (IBD) such as Crohn’s disease and ulcerative colitis from irritable bowel syndrome (IBS). Doctors order this test for patients with chronic diarrhea, abdominal pain, or rectal bleeding. Results provide valuable insight into gut health, disease activity, and the need for further testing or treatment monitoring.

The Cardio IQ™ Insulin Resistance Panel with Score Test measures markers of insulin resistance to evaluate glucose control, lipid metabolism, and cardiometabolic health. The score offers insight into type 2 diabetes risk, cardiovascular disease, and endocrine balance. This test supports monitoring of metabolic function, energy regulation, and systemic conditions tied to insulin resistance.

The Cardio IQ™ hs-CRP Test measures high-sensitivity C-reactive protein in the blood to assess inflammation linked to cardiovascular risk. Elevated levels may indicate a higher risk of heart disease or other inflammatory conditions.

The Cardio IQ™ Lipoprotein Fractionation Ion Mobility Test separates and measures lipoprotein particles by size and concentration using ion mobility technology. It provides a detailed profile of LDL, HDL, and other subclasses, offering a clearer assessment of cardiovascular risk than standard cholesterol testing.

The NMR Lipoprotein Fractionation Test uses nuclear magnetic resonance to measure particle size and concentration of LDL, HDL, and VLDL cholesterol. Unlike a standard lipid panel, it provides detailed information on lipoprotein subfractions linked to cardiovascular risk. Doctors use this test to assess heart disease risk, guide cholesterol management, and monitor therapy effectiveness. It offers deeper insight into lipid metabolism and cardiovascular health.

The Cardio IQ™ Lp-PLA2 PLAC® Test measures lipoprotein-associated phospholipase A2, an enzyme linked to vascular inflammation and plaque instability. Elevated levels are associated with increased risk of coronary heart disease and ischemic stroke. Doctors use this blood test to assess cardiovascular risk beyond standard cholesterol testing, helping guide prevention and treatment strategies to reduce risk of heart attack or stroke.

The Carnitine Test measures carnitine levels in the blood to evaluate fatty acid metabolism and energy production. Abnormal results may indicate primary or secondary carnitine deficiency, often linked to metabolic disorders, malnutrition, or certain medications. Doctors use this test to investigate muscle weakness, hypoglycemia, or developmental delays and to monitor patients receiving treatment for metabolic or mitochondrial disease.

The Carotene Test measures blood carotene levels to evaluate vitamin A status, dietary intake, and fat absorption. Carotene, a precursor of vitamin A, is essential for vision, immune function, and skin health. Abnormal levels may indicate malnutrition, fat malabsorption, or liver disease. Physicians use this test to assess nutritional health, monitor absorption disorders, and support diagnosis of conditions affecting metabolism and overall wellness.

The CBC with H/H, RBC, Indices, WBC and Platelets Test evaluates overall blood health by measuring hemoglobin, hematocrit, red blood cell count, size and indices, white blood cell levels, and platelets. It helps detect anemia, infections, clotting disorders, and immune or bone marrow conditions. Frequently ordered in routine exams, this test supports diagnosis, monitoring of chronic disease, and assessment of general health.

The CEA Test measures carcinoembryonic antigen levels in blood, a protein that may be elevated in certain cancers, especially colorectal, pancreatic, lung, breast, or ovarian cancer. It is not used alone for diagnosis but helps monitor cancer treatment, detect recurrence, and track disease progression. Elevated CEA can also occur in noncancerous conditions. Doctors use this test to support therapy decisions and provide insight into cancer management.

The Ceruloplasmin Test measures levels of ceruloplasmin, a copper-carrying protein made in the liver, to evaluate copper metabolism and related disorders. Low levels may indicate Wilson’s disease, Menkes disease, or severe liver disease, while high levels may suggest inflammation or pregnancy. Doctors order this test for patients with liver problems, neurological symptoms, or abnormal copper levels. Results help diagnose metabolic disorders and guide treatment.

The Chlamydia trachomatis RNA TMA Urine Test detects genetic material of C. trachomatis using transcription-mediated amplification (TMA), a highly sensitive method for diagnosing infection. Doctors order this noninvasive urine test for patients with symptoms like discharge, pain, or burning urination, or for routine STD screening. Results help confirm infection, guide treatment, and prevent complications such as infertility, pelvic inflammatory disease, or transmission.

The Chlamydia/Neisseria gonorrhoeae RNA, TMA Urine Test screens for both chlamydia and gonorrhea infections by detecting RNA from these bacteria. Using advanced molecular technology, it offers high accuracy for diagnosing active infections. Doctors order this urine-based test to confirm infection, support early treatment, and protect sexual partners. It is an essential tool for sexual health screening, helping reduce long-term health risks and control STD spread.

The Chromogranin A Test measures levels of chromogranin A, a protein often elevated in neuroendocrine tumors. It helps doctors monitor tumor presence, treatment response, and recurrence. Elevated results may also occur with conditions such as chronic atrophic gastritis, inflammatory diseases, or use of proton pump inhibitors. Combined with imaging and other tumor markers, this test supports the diagnosis and management of neuroendocrine disorders.

The Clostridium difficile Toxin B Qualitative Test detects the presence of toxin B, a major virulence factor of C. difficile infection. This stool-based test helps identify active infection in patients with diarrhea, abdominal pain, or recent antibiotic use. Positive results support diagnosis of C. difficile–associated disease, which may cause colitis or severe gastrointestinal complications, aiding clinical evaluation and treatment decisions.

The Complement Total CH50 Test measures overall activity of the complement system, a key part of the immune response that helps fight infections and regulate inflammation. Abnormal results may indicate autoimmune diseases such as lupus, complement deficiencies, or immune complex disorders. Doctors use this blood test to evaluate immune function, investigate recurrent infections, and monitor treatment in patients with suspected immune or autoimmune conditions.

The Complete Blood Count with Differential and Platelets Test is a comprehensive blood test that checks red blood cells, white blood cells, hemoglobin, hematocrit, and platelets. The differential analyzes types of white blood cells to detect infections, anemia, clotting abnormalities, immune conditions, and certain cancers. This essential test is often ordered for routine health exams, diagnosis, and monitoring treatment progress.