All Digestive System Tests

The Absolute Lymphocyte Count Test quantifies lymphocytes in blood, expressing immunity status through an absolute cell count rather than relative percentage. It aids in diagnosing immune disorders, tracking viral infection recovery, or identifying early signs of hematologic disease. By distinguishing lymphocytosis and lymphopenia, this test provides clinicians insight into immune suppression, overactivation, or recovery phases in infections or immunocompromised states.

The Gastroenteritis Adenovirus Antigen Detection Test identifies adenovirus antigens in stool samples to confirm viral infection linked to acute gastroenteritis. Adenoviruses are a common cause of diarrhea, vomiting, and abdominal pain, especially in young children. By detecting viral antigens directly, this test provides rapid diagnostic insight, supporting clinical evaluation of gastrointestinal illness and infection control.

The Aldolase Test measures levels of aldolase, an enzyme involved in breaking down glucose for energy. Elevated levels may indicate muscle damage, muscular dystrophy, polymyositis, dermatomyositis, or certain liver diseases. Doctors use this blood test to help diagnose and monitor muscle disorders, evaluate unexplained weakness, and track treatment response. It is often ordered alongside CK and other enzyme tests for a complete evaluation of muscle health.

The Alpha-1-Antitrypsin Quantitative Test measures levels of alpha-1-antitrypsin (AAT), a protein that protects the lungs and liver from damage. Low levels may indicate alpha-1-antitrypsin deficiency, a genetic disorder linked to emphysema, COPD, and liver disease. Doctors use this test to investigate unexplained lung or liver problems, confirm hereditary AAT deficiency, and guide treatment or monitoring strategies for long-term health management.

The Amylase Test measures amylase enzyme levels in blood to evaluate pancreatic and digestive health. Elevated amylase may indicate pancreatitis, gallbladder disease, intestinal blockage, or salivary gland disorders, while low levels may suggest chronic pancreatitis or liver damage. Doctors order this test to investigate abdominal pain, nausea, or fever. Results provide vital insight into pancreatic function, digestive disorders, and overall metabolic health.

The Amylase Random Urine Test with Creatinine measures amylase excretion corrected for creatinine, ensuring accurate assessment of enzyme activity. Abnormal results may indicate pancreatitis, salivary gland disorders, pancreatic duct obstruction, or impaired kidney clearance. By examining both amylase and creatinine, this test supports evaluation of pancreatic function, renal health, and gastrointestinal enzyme balance.

The ANA Screen IFA with Reflex to Titer and Pattern Test detects antinuclear antibodies in blood to evaluate autoimmune activity. If positive, further testing identifies antibody concentration (titer) and fluorescence pattern, helping diagnose conditions like lupus, rheumatoid arthritis, or Sjögren’s syndrome. Doctors order this test to investigate symptoms such as joint pain, fatigue, rash, or swelling and to guide treatment for autoimmune and connective tissue disorders.

The ANCA Screen with MPO and PR3 with Reflex to ANCA Titer detects antineutrophil cytoplasmic antibodies linked to autoimmune vasculitis. By targeting myeloperoxidase (MPO) and proteinase 3 (PR3), this test helps evaluate conditions such as granulomatosis with polyangiitis or microscopic polyangiitis. It supports diagnosis, disease activity monitoring, and assessment of autoimmune inflammation.

The ANCA Screen with Reflex to ANCA Titer detects antineutrophil cytoplasmic antibodies, often linked to autoimmune vasculitis such as granulomatosis with polyangiitis and microscopic polyangiitis. If the screen is positive, a titer is performed to measure antibody levels for greater diagnostic accuracy. Doctors use this test to evaluate unexplained inflammation, kidney or lung issues, and guide treatment decisions in autoimmune and systemic vasculitis care.

The ANCA Vasculitides Test measures antibodies that target neutrophils, helping identify autoimmune vasculitis. It aids in diagnosing conditions including granulomatosis with polyangiitis and microscopic polyangiitis. This test provides insight into systemic inflammation, kidney disease, and respiratory involvement, supporting evaluation of autoimmune disorders linked to vascular and organ damage.

The Beta-2-Microglobulin (B2M) Test measures levels of B2M, a protein found on most cell surfaces and released into the blood. Elevated levels may indicate multiple myeloma, lymphoma, chronic infections, or kidney disease. Doctors order this test to evaluate cancer stage, prognosis, or kidney function. Results provide essential insight into disease progression, immune activity, and treatment monitoring for blood cancers and renal disorders.

The Boron Test measures levels of this trace mineral in the body, providing insight into nutritional balance, bone metabolism, and endocrine health. Boron plays a role in calcium and magnesium utilization, hormone regulation, and cognitive function. Abnormal results may reflect dietary deficiency, excessive supplementation, or environmental exposure, aiding evaluation of metabolic health and mineral balance.

The C-Peptide Test measures C-peptide levels in blood to assess insulin production and pancreatic function. Low levels may indicate type 1 diabetes or reduced insulin production, while high levels may suggest type 2 diabetes, insulin resistance, or insulinoma. Doctors use this test to differentiate diabetes types, monitor treatment, and evaluate unexplained hypoglycemia. It provides key insight into endocrine, pancreatic, and metabolic health.

The C-Peptide Response to Glucose Test with 2 specimens evaluates pancreatic beta cell activity and insulin secretion during glucose intake. By measuring changes in C-peptide levels at two time points, it helps assess insulin production, glucose regulation, and potential insulin resistance or diabetes-related disorders. This test offers insight into metabolic health and endocrine function.

The C-Peptide Response to Glucose Test with 3 specimens measures pancreatic beta cell function and insulin secretion at multiple time points. Tracking C-peptide levels across three collections provides insight into insulin production, glucose regulation, and metabolic health, supporting evaluation of diabetes risk, hypoglycemia, and overall endocrine function.

The C-Peptide Response to Glucose Test with 4 specimens measures pancreatic beta cell activity and insulin secretion across four timed intervals. Tracking C-peptide changes provides insight into glucose regulation, insulin production, and metabolic function, helping evaluate diabetes risk, hypoglycemia, insulin resistance, and overall endocrine health.

The C-Peptide Response to Glucose Test with 5 specimens measures pancreatic beta cell activity and insulin secretion across five timed intervals. Tracking C-peptide levels over multiple points provides detailed insight into glucose regulation, insulin resistance, hypoglycemia, and diabetes risk, supporting evaluation of metabolic balance and overall endocrine health.

The C-Peptide Response to Glucose Test with 6 specimens measures pancreatic beta cell activity and insulin secretion at six timed intervals. Tracking C-peptide levels across multiple points provides a detailed profile of insulin production, glucose regulation, and metabolic health, supporting assessment of insulin resistance, hypoglycemia, diabetes risk, and overall endocrine function.

The C-Peptide Response to Glucose Test with 7 specimens measures pancreatic beta cell activity and insulin secretion across seven timed intervals. Monitoring C-peptide changes over multiple collections provides detailed insight into insulin production, glucose regulation, and metabolic balance, supporting evaluation of diabetes risk, hypoglycemia, insulin resistance, and endocrine system health.

The C-Peptide Response to Glucose Test with 9 specimens measures pancreatic beta cell activity and insulin secretion across nine timed intervals. Tracking C-peptide patterns provides detailed insight into insulin production, glucose regulation, and metabolic health, supporting the detection of insulin resistance, diabetes risk, hypoglycemia, and overall endocrine function.

The C-Reactive Protein (CRP) Test measures CRP levels in blood to detect inflammation in the body. Elevated CRP may indicate infections, autoimmune disorders, or chronic diseases such as arthritis, cardiovascular disease, or inflammatory bowel disease. Doctors use this test to assess acute illness, monitor treatment response, and evaluate risk for heart disease. The CRP test provides key insight into inflammation, immune health, and overall wellness.

The High-Sensitivity C-Reactive Protein (hs-CRP) Test measures very low levels of CRP in blood to evaluate inflammation and cardiovascular risk. Elevated hs-CRP may indicate increased risk for heart disease, heart attack, or stroke even before symptoms appear. Doctors use this test along with cholesterol and other markers to assess overall heart health, guide prevention strategies, and monitor treatment. It also helps evaluate chronic inflammation and metabolic conditions.

The C3a DesArg Fragment Test measures levels of C3a desarginated, a stable breakdown product of complement activation. Elevated concentrations reflect immune system activation and may indicate autoimmune disease, sepsis, allergic reactions, or inflammatory conditions. This test provides insight into complement pathway activity, helping evaluate immune dysregulation, monitor disease progression, or assess systemic inflammation.