Inflammatory Bowel Disease (IBD)

Inflammatory Bowel Disease (IBD)—mainly Crohn’s disease and ulcerative colitis—causes chronic inflammation of the gastrointestinal tract. Symptoms can flare and calm over time, and the right labs help differentiate IBD from IBSexclude infection, and track inflammation so you and your clinician can act early. A proactive plan starts with stool markers of intestinal inflammation (fecal calprotectin or fecal lactoferrin) plus blood inflammation markers(CRP/ESR). During flares or new symptoms, stool testing ... See more

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The Proteinase-3 Antibody Test detects antibodies against proteinase-3, a neutrophil enzyme associated with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis. Elevated levels are strongly linked to granulomatosis with polyangiitis and other autoimmune small vessel vasculitides. This test aids in diagnosis, assessing disease activity, and guiding management of systemic inflammatory and autoimmune vascular conditions.

Serum
Phlebotomist

The Red Blood Cell Count Test measures the number of red blood cells circulating in the blood, essential for evaluating oxygen transport and overall health. Abnormal levels may indicate anemia, iron deficiency, vitamin B12 or folate deficiency, dehydration, or bone marrow disorders. This test provides critical insight into hematologic health and is often part of a complete blood count to guide further evaluation.

Blood
Phlebotomist
Also Known As: RBC Count Test

The Reducing Substances Stool Test measures sugars in stool to assess carbohydrate digestion and absorption. Elevated levels can point to lactose intolerance, hereditary enzyme deficiencies, or gastrointestinal conditions affecting nutrient breakdown. By identifying unabsorbed carbohydrates, this test helps clinicians evaluate chronic diarrhea, bloating, abdominal discomfort, or pediatric feeding problems, offering valuable information about intestinal and metabolic health.

Stool/Feces
Phlebotomist

The Reticulocyte Count Test measures immature red blood cells (reticulocytes) to evaluate bone marrow function and red cell production. High levels may indicate blood loss, hemolytic anemia, or recovery from treatment, while low levels may suggest bone marrow failure, nutritional deficiencies, or chronic disease. Doctors use this test to assess anemia, monitor therapy, or track recovery. Results provide key insight into red blood cell health and overall hematologic function.

Blood
Phlebotomist
Also Known As: Retic Count Reticulocyte Percent Test, Reticulocyte Index Test, Corrected Reticulocyte Test, Reticulocyte Production Index Test, RPI Test

The Sickle Cell Screen detects abnormal hemoglobin S in blood to identify sickle cell trait or sickle cell disease. A positive screen suggests the presence of sickle hemoglobin, which may require confirmatory testing. Doctors order this test for newborn screening, genetic counseling, or evaluating anemia, pain crises, or family history of hemoglobin disorders. Results provide key insight into sickle cell status, red blood cell health, and hereditary blood conditions.

Blood
Phlebotomist
Also Known As: Sickle Cell Test, Hemoglobin S Test, Sickle Cell Blood Test

The Soluble Transferrin Receptor Test evaluates blood sTfR concentration to assess iron metabolism and red blood cell production. It is particularly useful for differentiating iron deficiency anemia from anemia of chronic disease, since sTfR remains stable in the presence of inflammation. This test helps clinicians identify hidden iron deficiency, monitor treatment response, and evaluate hematopoietic activity in various clinical contexts.

Serum
Phlebotomist

The Thiopurine Metabolites Test evaluates active metabolites of thiopurine drugs, including 6-thioguanine nucleotides and 6-methylmercaptopurine, to assess treatment effectiveness and safety. Elevated or low metabolite levels may indicate risk of toxicity, under-dosing, or non-adherence. This test provides critical insight for managing patients on immunosuppressive therapy, guiding personalized dosing, and monitoring long-term response.

Blood
Phlebotomist

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The Transferrin Test measures transferrin, a blood protein that transports iron, to evaluate iron status and nutritional health. High levels may suggest iron deficiency anemia, while low levels may indicate liver disease, malnutrition, or chronic illness. Doctors use this test alongside iron and TIBC to investigate fatigue, weakness, or anemia symptoms. Results provide vital insight into iron balance, red blood cell production, and overall metabolic function.

Serum
Phlebotomist

The Vitamin E Micronutrient Test measures blood levels of vitamin E to assess antioxidant status and detect deficiencies or excess. Vitamin E protects cells from oxidative damage, supports immune function, and promotes cardiovascular and neurological health. This test helps identify poor dietary intake, absorption issues, or toxicity from supplements, aiding in diagnosis and management of overall wellness.

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

The Vitamin E Test measures blood levels of vitamin E, a fat-soluble antioxidant essential for protecting cells, supporting immunity, and maintaining nerve and muscle health. Low levels may result from poor diet, malabsorption, or liver disease, leading to weakness or vision problems. High levels can occur with excessive supplementation. Doctors order this test to assess nutritional status, monitor chronic illness, or guide therapy for deficiency or toxicity.

Serum
Phlebotomist
Also Known As: Tocopherol Test

The White Blood Cell Count with Differential Test measures total white blood cells and breaks them into types, including neutrophils, lymphocytes, monocytes, eosinophils, and basophils. Doctors order this test to evaluate infections, inflammation, immune disorders, and blood cancers. Abnormal results may suggest bacterial or viral infections, allergies, or leukemia. Results provide key insight into immune system health, disease detection, and treatment monitoring.

Blood
Phlebotomist
Also Known As: WBC Test, Leukocyte Test, Leukocyte Differential Test, Blood Differential Test, Diff Test, Peripheral Differential Test




Plasma-Unspecified Vial Pour, Serum
Phlebotomist

In 2015, over 3 million adults in the US were diagnosed with inflammatory bowel disease (ulcerative colitis or Crohn's disease), and that number continues to climb.

You're not alone if you or someone you love has inflammatory bowel disease or is going through diagnostic testing. There is a lot to know about IBD and all the inflammatory disease lab tests that pave the way to a diagnosis.

If you're unsure about how inflammatory disease is diagnosed, then keep reading this guide. You'll learn everything you need to know about IBD and IBD blood tests.

What Is Inflammatory Bowel Disease?

You've probably heard of irritable bowel syndrome (IBS), a condition that causes an irritable colon and cramps. While IBS can significantly impact your life, it doesn't cause damage to your digestive tract like inflammatory bowel disease does.

Another interesting fact is that you can have both IBD and IBS simultaneously, but having IBS ... See more