Testing Guides
Use LabTestingCenter guides to understand preparation and results.
Allergy Panel Testing: What It Measures and How to Understand Results
Learn what an allergy panel is, which allergens it commonly tests for, how results are interpreted, and when testing may be appropriate.
Read guideAutoimmune and ANA Testing: A Complete Guide to Antinuclear Antibody Tests
Learn how antinuclear antibody (ANA) testing is used in the evaluation of autoimmune conditions, what results mean, and why a positive ANA alone does not diagnose disease.
Read guideBlood Test Guide: Purpose, Types, Preparation, and Reading Results
A factual guide to blood tests: what they measure, common panels, how to prepare, what results can show, and how to read a lab report with your clinician.
Read guideCBC and Anemia: Understanding Red Blood Cell Indices
Learn how a complete blood count (CBC) helps evaluate anemia, what MCV and RDW mean, and how red blood cell indices guide further testing.
Read guideCardiac Markers: What These Blood Tests Measure and Why They Matter
Learn what cardiac markers are, which blood tests detect heart muscle injury, how results are interpreted, and when testing is used in clinical care.
Read guideDrug Testing: How Laboratory Tests Detect and Confirm Substances
Learn how laboratory drug testing works, including specimen types, screening versus confirmation methods, detection windows, and factors that affect results.
Read guideGlucose and A1C Testing: What These Metabolic Markers Mean
Learn how glucose and A1C tests differ, what the results measure, and how clinicians use them together to assess blood sugar and metabolic health.
Read guideHormone Panel Testing: What It Measures and How to Understand Results
Learn what a hormone panel measures, which hormones are commonly included, how results are interpreted, and what factors can affect hormone test accuracy.
Read guideInflammation and ESR: A Guide to Lab Testing
Learn how laboratory tests, including the erythrocyte sedimentation rate (ESR), help assess inflammation and support clinical evaluation.
Read guideIron and Anemia: A Guide to Laboratory Testing
Learn how iron relates to anemia, which laboratory tests evaluate iron status, and how to interpret common results from a factual, non-salesy perspective.
Read guideKidney Function Lab Tests: A Guide to BUN, Creatinine, and eGFR
Learn how kidney function is assessed with lab tests such as BUN, creatinine, and eGFR, what the results can mean, and when testing may be appropriate.
Read guideLipid Panel Guide: Understanding Cholesterol and Triglyceride Testing
Learn what a lipid panel measures, how to prepare for the test, how results are interpreted, and what lifestyle factors influence cholesterol and triglyceride levels.
Read guideLiver Function Tests: A Complete Guide to ALT, AST, Bilirubin, and More
Learn how liver function tests work, what ALT, AST, bilirubin, and other markers measure, and how to understand your results.
Read guideMetabolic Panel Testing: What a CMP and BMP Measure and Mean
Learn what a metabolic panel measures, the difference between a basic and comprehensive metabolic panel, how results are interpreted, and what to discuss with your clinician.
Read guideSTD Panel Testing: What It Screens For and How to Understand Results
Learn what an STD panel tests for, which infections are commonly included, how sample collection works, and how to interpret positive or negative results.
Read guideThyroid Panel: What the Tests Measure and How to Read Results
Learn what a thyroid panel measures, which tests it includes, how to interpret TSH, T4, T3, and antibody results, and when testing may be appropriate.
Read guideTumor Markers: What Lab Tests Can and Cannot Tell You
Learn what tumor markers are, how they are measured in blood and other samples, what the results can and cannot show, and why they are usually interpreted alongside imaging and biopsy.
Read guideVitamin Panel Testing: What It Measures and When It Is Used
A vitamin panel is a group of blood tests that measure levels of specific vitamins. Learn what a vitamin panel measures, why it is ordered, how to prepare, and how results are interpreted.
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Each laboratory panel is reviewed by the LabTestingCenter editorial desk against authoritative reference data.