All Arthritis Tests

The Cardiolipin IgA Antibody Test detects IgA antibodies to cardiolipin, helping assess clotting disorders, autoimmune disease, and vascular complications. High levels are often linked to antiphospholipid syndrome, pregnancy loss, or thrombotic conditions. This test provides insight into immune activity, coagulation balance, and systemic disorders influenced by antibody-mediated vascular dysfunction.

The Cardiolipin IgG Antibody Test detects IgG antibodies to cardiolipin, often associated with autoimmune disease. Abnormal results may indicate antiphospholipid syndrome, blood clotting disorders, or pregnancy complications. This test provides insight into thrombotic risk, vascular health, systemic inflammation, and immune activity linked to autoimmune conditions and antibody-mediated disease.

The Cardiolipin IgM Antibody Test measures IgM antibodies linked to antiphospholipid syndrome and autoimmune disorders. It helps evaluate unexplained blood clots, recurrent miscarriages, or abnormal clotting events. By detecting immune system activity against phospholipids, this test supports the assessment of vascular health, autoimmune activity, and risks related to thrombosis or systemic lupus erythematosus.

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 Complement Component C3c and C4c Test measures levels of two key proteins in the complement system, which supports immune defense and inflammation control. Abnormal results may indicate autoimmune disease, lupus, rheumatoid arthritis, or certain infections. Doctors use this test to investigate unexplained inflammation, monitor disease activity, and guide treatment decisions in patients with suspected immune or inflammatory disorders.

The Complement Component C4c Test measures blood levels of C4c, a protein in the complement system that supports immune defense and inflammation control. Abnormal levels may indicate autoimmune disorders such as lupus, rheumatoid arthritis, or immune complex disease, as well as certain kidney conditions. Doctors use this test to evaluate complement activation, confirm diagnosis, and monitor treatment response in patients with suspected immune-related diseases.

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 Cortisol AM Test measures morning cortisol levels in blood to evaluate adrenal gland function and stress response. Cortisol peaks in the morning, making this test critical for detecting adrenal insufficiency (Addison’s disease), Cushing’s syndrome, or other hormone imbalances. Doctors also use it to investigate fatigue, weight changes, or high blood pressure. This test provides important insight into endocrine health, metabolism, and long-term stress regulation.

The Creatine Kinase (CK) Total Test measures CK enzyme levels in blood to detect muscle injury, inflammation, or stress. Elevated CK may indicate muscle disorders, heart attack, strenuous exercise, or conditions such as rhabdomyolysis, while low levels are less common. Doctors use this test to evaluate unexplained muscle pain, weakness, or chest pain and to monitor recovery. It provides insight into muscle, cardiac, and overall metabolic health.

The DHEA Sulfate (DHEA-S) Test measures levels of DHEA-S, a hormone made by the adrenal glands, to evaluate adrenal function and hormone balance. It helps detect adrenal tumors, hyperplasia, or insufficiency and assess abnormal hair growth, infertility, or early/late puberty. Doctors also use it to investigate irregular menstrual cycles, monitor androgen disorders, and evaluate symptoms of hormone imbalance affecting reproductive and metabolic health.

The Ferritin Test measures ferritin, a protein that stores iron in the body, to evaluate iron levels and detect deficiency or overload. It helps diagnose anemia, iron deficiency, hemochromatosis, and chronic disease-related inflammation. Doctors often order the ferritin test to investigate fatigue, weakness, or unexplained symptoms. It is also used to monitor iron supplementation, treatment effectiveness, and overall iron metabolism health.

The Neisseria gonorrhoeae RNA TMA Urine Test detects gonorrhea infection by identifying bacterial RNA using transcription-mediated amplification. This highly sensitive urine test helps diagnose current gonorrhea infections, even in asymptomatic cases. Doctors use it for early detection, accurate diagnosis, and timely treatment to prevent complications. Results support effective STD management and help reduce the risk of transmission.

The Hemoglobin A1c (HbA1c) Test measures average blood glucose over 2–3 months by detecting sugar attached to hemoglobin in red blood cells. It is used to diagnose diabetes, identify prediabetes, and monitor long-term blood sugar control. Doctors rely on the HbA1c test to evaluate treatment effectiveness, guide adjustments, and assess risk for complications, making it essential for diabetes care and metabolic health screening.

The Immunoglobulin E (IgE) Test measures IgE antibody levels in blood to evaluate allergic reactions, asthma, and immune response. Elevated IgE may indicate allergies to food, pollen, or other triggers, as well as eczema or parasitic infections. Doctors order this test to investigate symptoms like hives, sneezing, or wheezing and to guide allergy treatment. Results provide vital insight into immune health, allergic sensitivity, and overall diagnostic care.

The Immunoglobulin G (IgG) Test measures IgG antibody levels in blood to assess immune system function and long-term response to infections. Low IgG may indicate immune deficiencies or recurrent infections, while high levels may signal chronic inflammation, autoimmune disease, or certain infections. Doctors use this test to evaluate unexplained illness, monitor immune disorders, or assess overall immunity. Results provide vital insight into immune health and disease management.

The Immunoglobulin A (IgA) Test measures IgA antibody levels in blood to evaluate immune system health and mucosal defense in the respiratory and digestive tracts. Low IgA may indicate immune deficiency, celiac disease, or recurrent infections, while high levels may suggest autoimmune disorders, liver disease, or chronic inflammation. Doctors use this test to assess unexplained illness or immune imbalance. Results provide key insight into antibody function and overall immunity.

The Insulin Test measures insulin levels in blood to assess how the body regulates glucose and metabolism. It helps diagnose insulin resistance, hypoglycemia, type 2 diabetes, and metabolic syndrome. Doctors also use it to evaluate pancreatic function and monitor treatment effectiveness. Frequently ordered with glucose testing, the insulin test provides critical insight into endocrine health, blood sugar control, and risk for diabetes-related complications.

The Lyme Disease IgG IgM Antibodies Immunoblot Test detects antibodies to Borrelia burgdorferi, the bacteria causing Lyme disease. IgM indicates recent infection, while IgG suggests past or ongoing infection. Doctors order this test to confirm exposure after ELISA screening or when symptoms such as rash, fatigue, joint pain, or neurological issues appear. Results provide critical insight for diagnosing and managing Lyme disease with greater accuracy.

The Activated Partial Thromboplastin Time (aPTT) Test measures how long it takes blood to clot, evaluating clotting factors and overall coagulation function. Abnormal results may indicate bleeding disorders, hemophilia, liver disease, or clotting factor deficiencies. Doctors also use this test to monitor patients on heparin therapy. Results provide essential insight into blood clotting, bleeding risk, and treatment management for safe medical care.

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.

The Prothrombin Time with INR Test measures how long it takes blood to clot and calculates the international normalized ratio (INR) for accuracy. It is commonly used to monitor patients on blood-thinning medications like warfarin and to evaluate bleeding disorders, liver disease, or vitamin K deficiency. Doctors order this test to investigate easy bruising, frequent nosebleeds, or prolonged bleeding and to ensure safe and effective anticoagulant therapy.

The RNP Antibody Test detects antibodies to ribonucleoprotein, an autoantigen linked to connective tissue and autoimmune diseases. Elevated levels may indicate mixed connective tissue disease, systemic lupus erythematosus, or other autoimmune disorders. This test provides valuable insight into immune system activity and is often performed alongside ANA and ENA panels for a broader evaluation of autoimmune health.

The Salicylate Test measures salicylate levels in the blood to evaluate therapeutic use or potential toxicity from aspirin and related medications. Elevated concentrations may indicate overdose, metabolic disturbance, or risk of salicylate poisoning. This test supports monitoring in patients treated for pain, inflammation, or cardiovascular conditions and helps guide clinical management of suspected overdose cases.

The Testosterone Free and Total Test measures total testosterone and free, bioavailable testosterone in blood for both men and women. It helps diagnose hormone imbalance, infertility, low libido, erectile dysfunction in men, irregular periods, or PCOS in women. Doctors also order it to assess fatigue, mood changes, or muscle weakness and to monitor hormone therapy. This test provides key insight into reproductive, endocrine, and overall metabolic health.

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.