Knowledge base

Testing guides

Plain-language background on what different groups of tests measure, how samples are collected, and what results generally mean.

allergy

Allergy testing

IgE and related tests for food, environmental, and other allergens.

allergy Food Allergy IgE Blood Testing: How It Really Works Food allergy IgE blood tests measure antibodies linked to allergic reactions. Learn how they work, what the results show, and their important limits. Read the guide

autoimmune

Autoimmune testing

Antibodies and inflammation markers associated with autoimmune conditions.

autoimmune CRP Blood Test Guide: C-Reactive Protein Explained Learn what a CRP blood test measures, why clinicians order C-reactive protein testing, how the sample is collected, and how results are usually report… Read the guide autoimmune Celiac Disease Testing: Blood Tests and What Follows Celiac disease testing usually starts with antibody blood tests. Learn what they measure, why gluten matters, and how results are confirmed. Read the guide

cardiac

Cardiac testing

Markers associated with heart muscle and cardiovascular risk.

cardiac Lipid Panel and Cholesterol Test: What the Numbers Mean A lipid panel measures cholesterol and triglycerides. Learn what each fraction means, when testing is useful, and how results are typically reported. Read the guide

general

General wellness testing

Everyday panels and single markers for routine health checks.

general Complete Blood Count CBC Test: What Your Results Mean A complete blood count measures red cells, white cells, hemoglobin, and platelets. Learn what each marker means and why clinicians order this test. Read the guide general Urinalysis Guide: What Your Urine Test Results Mean A clear guide to urinalysis: what the test checks, how to collect a clean sample, dipstick and microscopic findings, and how results are usually repor… Read the guide

hepatitis

Hepatitis testing

Hepatitis A, B, and C screening and monitoring tests.

hepatitis Hepatitis B Testing Guide: Markers and Immunity Explained Hepatitis B testing explained: surface antigen, antibodies, and core markers, why clinicians order them, sample collection, and how results are report… Read the guide hepatitis Hepatitis C Testing Guide: Antibody, RNA, and Results Hepatitis C testing explained: antibody and RNA tests, who should be screened, window periods, confidentiality, and how results are interpreted. Read the guide

hormone

Hormone testing

Thyroid, sex, adrenal, and related endocrine markers.

hormone Estradiol Blood Test: Estrogen Levels and What They Mean Estradiol testing explained: what the hormone does, why levels are checked, sample collection, related hormones, and how results are typically reporte… Read the guide hormone TSH Test for Thyroid Function: What Your Level Means The TSH test measures the pituitary hormone that tells your thyroid to work. Learn how it helps check for an underactive or overactive thyroid gland. Read the guide hormone Testosterone Test Guide: Total, Free, and Low Levels Learn how testosterone testing works, the difference between total and free testosterone, sample timing, preparation, and how results are usually repo… Read the guide

metabolic

Metabolic testing

Glucose, lipid, kidney, liver, and general chemistry panels.

metabolic Comprehensive Metabolic Panel Guide: Fourteen Markers A comprehensive metabolic panel checks kidney, liver, electrolyte, and glucose markers. Learn what each measure means and how the panel is reported. Read the guide metabolic Hemoglobin A1c Test: Reading Your Average Blood Sugar The hemoglobin A1c test reflects average blood sugar over about three months. Learn how it is used to screen for and monitor diabetes and prediabetes. Read the guide metabolic Kidney Function Test Guide: BUN, Creatinine, eGFR Explained Kidney function testing explained: BUN, creatinine, eGFR, and urine albumin, why clinicians order them, sample collection, and how results are reporte… Read the guide metabolic Liver Function Test Guide: ALT, AST, and What Results Mean Liver function testing explained: ALT, AST, bilirubin, and other markers, why panels are ordered, sample collection, and how results are usually repor… Read the guide

std

Sexual health testing

Confidential testing for common sexually transmitted infections.

std HIV Testing Guide: Window Period, Types, and Results A calm, factual guide to HIV testing: test types, the window period, sample collection, confidentiality, confirmatory testing, and how results work. Read the guide std STD Testing Guide: Types, Timing, and What Results Mean Understand STD testing options, how samples are collected, window periods, confidentiality, and how results are reported. Plain, factual guidance. Read the guide

vitamin

Vitamin & mineral testing

Nutrient markers such as vitamin D, B12, and iron.

vitamin Ferritin and Iron Tests: Understanding Anemia Testing Ferritin and iron tests show how much iron your body stores and uses. Learn what each marker means and how anemia and iron deficiency are evaluated. Read the guide vitamin Vitamin B12 Blood Test: Signs You May Need Testing A vitamin B12 test checks the level of this essential vitamin. Learn who may need testing, how the sample is taken, and how results are reported. Read the guide vitamin Vitamin D Blood Test: Checking Your Level Correctly A vitamin D test measures the main circulating form of the vitamin. Learn when testing is useful, who may need it, and how results are typically repor… Read the guide