Testing Guides
Read practical BookALabTest guides to common laboratory tests and what they measure.
Allergy Panel Testing: What It Measures and How to Understand Results
Learn what an allergy panel measures, which allergens it can include, how results are interpreted, and when testing may be appropriate.
Read guideAutoimmune and ANA Testing: What the Antinuclear Antibody Test Can and Cannot Tell You
Learn how antinuclear antibody (ANA) testing is used in the evaluation of autoimmune conditions, what a positive or negative result means, and why ANA alone cannot diagnose disease.
Read guideBlood Test Basics: A Practical Guide to Purpose, Preparation, and Reading Results
A clear, evergreen guide to blood tests: what they measure, how to prepare, what results can and cannot tell you, and how to discuss findings with a clinician.
Read guideCBC and Anemia: How a Complete Blood Count Helps Evaluate Low Red Blood Cells
A plain-language guide to how the complete blood count (CBC) helps clinicians evaluate anemia, including hemoglobin, hematocrit, MCV, RDW, and reticulocyte testing.
Read guideCardiac Markers: What Lab Tests Reveal About Heart Health
Learn what cardiac markers are, which blood tests measure them, and how doctors use troponin, CK-MB, BNP, and other markers to evaluate heart health.
Read guideDrug Testing: How Laboratory Panels Work and What Results Mean
Learn how laboratory drug testing works, including specimen types, detection windows, screening versus confirmation testing, and how to interpret results.
Read guideGlucose and A1C Testing: What These Blood Tests Measure
Learn how glucose and A1C tests differ, what they measure, how results are interpreted, and why both are used to screen for and monitor diabetes.
Read guideHormone Panel Testing: What the Tests Measure and How to Prepare
A factual guide to hormone panel testing, including which hormones are commonly measured, why a clinician may order a panel, how to prepare, and how to interpret results.
Read guideInflammation and Immune Testing: A Guide to ESR and Related Lab Tests
Learn how laboratory tests help assess inflammation and immune activity, including what ESR measures, why it is ordered, and how results are interpreted.
Read guideIron and Anemia: How Lab Tests Help Identify and Monitor Iron Deficiency
Learn how iron relates to anemia, which laboratory tests assess iron status, and how results are interpreted and monitored over time.
Read guideKidney Function Lab Tests: A Plain-Language Guide to BUN, Creatinine, and eGFR
Learn how kidney function blood and urine tests work, what BUN, creatinine, and eGFR measure, and how to interpret results with your clinician.
Read guideLipid Panel: What It Measures and How to Understand Your Results
A lipid panel is a blood test that measures cholesterol and triglycerides. Learn what each value means, how testing works, and how results are interpreted.
Read guideLiver Function Tests: ALT, Bilirubin, and What Results Mean
An evergreen guide to liver function testing, including ALT, AST, bilirubin, and other liver panel markers, what they measure, and how results are interpreted.
Read guideMetabolic Panel Testing: What a CMP and BMP Measure
Learn what a metabolic panel measures, the difference between a basic and comprehensive panel, how results are interpreted, and when testing may be useful.
Read guideSTD Panel Testing: What It Screens For and How to Prepare
Learn what an STD panel tests for, which infections are commonly included, how sample collection works, and how to interpret results.
Read guideThyroid Panel: What Tests Measure and How to Understand Results
Learn what a thyroid panel measures, which tests it includes, how results are interpreted, and what can affect thyroid hormone levels.
Read guideTumor Markers: What Lab Tests Can and Cannot Tell You
Learn what tumor markers are, how tumor marker blood tests are used in cancer care, their limitations, and why results must always be interpreted alongside imaging, biopsy, and clinical findings.
Read guideVitamin Panel Testing: What It Measures and When It Matters
Learn what a vitamin panel measures, which vitamins are commonly included, how results are interpreted, and when testing may be appropriate.
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