Testing Guides
Plain-language BloodWorkCenters guides to frequently ordered panels.
Allergy Panel Testing: What Blood Tests Can and Cannot Tell You
Learn how allergy panels work, what IgE blood tests measure, how results are interpreted, and when allergy testing may be appropriate.
Read guideAutoimmune and ANA Testing: What an Antinuclear Antibody Test Can and Cannot Tell You
Learn how antinuclear antibody (ANA) testing is used in evaluating possible autoimmune conditions, what a positive or negative result means, and why ANA alone cannot diagnose disease.
Read guideBlood Test Basics: A Practical Guide to Laboratory Testing
Learn how blood tests work, what they can reveal, how to prepare, and how to read your lab results with this factual guide from BloodWorkCenters.
Read guideCBC and Anemia: Understanding Red Blood Cell Indices
Learn how a complete blood count (CBC) helps evaluate anemia, including what MCV, RDW, hemoglobin, and hematocrit mean and how clinicians interpret them.
Read guideCardiac Markers: What Heart Blood Tests Measure and Why They Matter
Learn what cardiac markers are, which proteins and enzymes heart blood tests measure, how results are interpreted, and when testing is used.
Read guideDrug Testing: How Laboratory Panels Work and What Results Mean
An evergreen guide to laboratory drug testing, covering common specimen types, screening versus confirmation methods, detection windows, and how to interpret results.
Read guideGlucose and A1C Testing: What These Metabolic Markers Mean
Learn how glucose and A1C tests differ, what the results mean, and how they are used 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 to prepare, and how to interpret results from authoritative sources.
Read guideInflammation and ESR Testing: A Plain-Language Guide
Learn what inflammation is, how laboratory tests such as the erythrocyte sedimentation rate (ESR) help clinicians assess it, and how to interpret results in context.
Read guideIron and Anemia: Understanding Lab Tests That Evaluate Iron Status
Learn how laboratory tests such as ferritin, iron, TIBC, transferrin saturation, and CBC help evaluate iron status and different types of anemia.
Read guideKidney Function Lab Tests: BUN, Creatinine, and eGFR Explained
Learn how laboratory tests assess kidney function, including BUN, creatinine, and eGFR, what the results mean, and when testing may be appropriate.
Read guideLipid Panel Test Guide: What Your Cholesterol Numbers Mean
Learn what a lipid panel measures, how to prepare, how results are interpreted, and when testing is recommended, based on guidance from major health organizations.
Read guideLiver Function Tests: A Complete Guide to ALT, Bilirubin, and Related Lab Markers
Learn how liver function tests work, what ALT and bilirubin measure, which lab tests assess the liver, and how to interpret common results.
Read guideMetabolic Panel: What It Measures and How to Read Your Results
A metabolic panel is a common blood test that measures glucose, electrolytes, kidney and liver markers. Learn what each component means and how results are interpreted.
Read guideSTD Panel Testing: What It Screens For and How to Interpret Results
Learn what an STD panel tests for, which infections are commonly included, how sample collection works, and how to understand your results.
Read guideThyroid Panel: What It Tests, Why It Matters, and How to Prepare
Learn what a thyroid panel measures, including TSH, T3, T4, and thyroid antibodies, plus how to prepare, what results mean, and when testing is useful.
Read guideTumor Markers: What Laboratory Tests Can and Cannot Tell You
Learn what tumor markers are, how they are measured in blood and other samples, their role in monitoring cancer, and why they are not used alone to diagnose cancer.
Read guideVitamin Panel Testing: What It Measures and How to Understand Results
Learn what a vitamin panel measures, which vitamins are commonly included, how to prepare, and how to interpret results with context from authoritative health sources.
Read guideReady to get tested? Compare markers, check any fasting guidance, then secure the panel via the BloodWorkCenters partner at your convenience.
Order TestsReviewed by the BloodWorkCenters Editorial Team
The BloodWorkCenters editorial team reviews laboratory panels against published reference material before publication.