Testing Guides
Use LabTestRequisition guides to understand preparation and results.
Allergy Panel Testing: What It Measures and How to Interpret Results
Learn what an allergy panel tests, the difference between IgE blood tests and skin testing, how results are interpreted, and when testing is appropriate.
Read guideAutoimmune and ANA Testing: A Complete Guide to Antinuclear Antibody Blood Tests
Learn how ANA testing is used in the evaluation of autoimmune conditions, what a positive or negative antinuclear antibody result means, and how to interpret ANA titers and patterns.
Read guideBlood Test Guide: Purpose, Procedure, and Reading Results
A factual guide to blood tests, covering what they measure, how the procedure works, common analytes such as BUN, and how to read lab results.
Read guideCBC and Anemia: How a Complete Blood Count Guides Evaluation
Learn how a complete blood count (CBC) is used to evaluate anemia, including what red blood cell indices such as MCV, MCH, and RDW mean and when follow-up testing may be appropriate.
Read guideCardiac Markers: A Guide to Heart Blood Tests
Learn what cardiac markers are, which tests measure them, why they are ordered, and how results are interpreted in the evaluation of heart muscle injury.
Read guideDrug Testing: How Laboratory Drug Screens Work and What Results Mean
Learn how laboratory drug testing works, including specimen types, detection windows, immunoassay screening, confirmatory testing, and how to interpret results.
Read guideGlucose and A1C Testing: What These Metabolic Markers Mean
Learn how glucose and A1C tests differ, what they measure, how results are interpreted, and why both are used together to assess metabolic health.
Read guideHormone Panel Testing: A Complete Guide to Hormone Blood Tests
Learn what a hormone panel measures, why hormone blood tests are ordered, how to prepare, and how to interpret results from a factual laboratory-testing perspective.
Read guideInflammation and ESR Testing: A Plain-Language Guide
Learn how inflammation works, what the erythrocyte sedimentation rate (ESR) measures, and how to interpret ESR results in the context of other lab tests.
Read guideIron and Anemia: A Guide to Laboratory Testing
Learn how laboratory tests evaluate iron status and anemia, including CBC, ferritin, iron panel, and transferrin saturation, and what results can mean.
Read guideKidney Function Lab Testing: A Complete Guide to BUN, Creatinine, and eGFR
Learn how kidney function is assessed through laboratory testing, including BUN, creatinine, and eGFR, what the results mean, and when testing may be appropriate.
Read guideLipid Panel: What It Measures, Who Needs It, and How to Read Results
A lipid panel measures total cholesterol, LDL, HDL, and triglycerides. Learn what the test involves, how to prepare, what the numbers mean, and when screening is recommended.
Read guideLiver Function Tests: A Complete Guide to ALT, AST, Bilirubin, and More
Learn what liver function tests measure, including ALT, AST, ALP, bilirubin, and albumin, why they are ordered, and how to prepare for accurate results.
Read guideMetabolic Panel Testing: What the Results Mean
Learn what a metabolic panel measures, the difference between basic and comprehensive panels, how results are interpreted, and what can affect your numbers.
Read guideSTD Panel Testing: What It Screens For and How to Prepare
An evergreen guide to STD panel testing, including which infections are commonly screened, how samples are collected, when results arrive, and how to interpret them.
Read guideThyroid Panel: What the Tests Measure and How to Read Results
A factual guide to thyroid panel testing, including which hormones and antibodies are measured, why a doctor orders the tests, how results are interpreted, and what can affect accuracy.
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 what results can and cannot tell you.
Read guideVitamin Panel Testing: What a Vitamin Panel Measures and When It Is Used
Learn what a vitamin panel is, which vitamins it typically measures, how results are interpreted, and when testing may be appropriate.
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