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Learn about lab results
Free educational resources about biomarkers, lab panels, and how to organize reports you already have — so you can prepare better questions for your clinician.
General biomarker education — not personalized medical advice. Learn more
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Biomarker library
Plain-language pages for common lab markers.
Panel guides
CBC, CMP, lipid panels, and more explained section by section.
Organize lab results
Keep PDFs and portal printouts in one organized history.
Results over time
Why tracking the same markers across visits helps you prepare questions.
Popular biomarkers
View all 45 →Panel guides
View all guides →Complete Blood Count (CBC)
A CBC measures cells circulating in blood, including red cells, white cells, and platelets.
Comprehensive Metabolic Panel (CMP)
A CMP groups markers related to electrolytes, kidney function, liver enzymes, and glucose.
Lipid Panel
Lipid panels report cholesterol fractions and triglycerides from a blood sample.
Hemoglobin A1c
A1c reflects average blood glucose over roughly the prior two to three months.
Glucose
Blood glucose measures the amount of sugar circulating at the time of the draw.
Kidney Markers
Kidney-related labs often include creatinine and estimated GFR (eGFR).
Lab literacy series
Organize lab results
Keep PDFs and portal printouts in one organized history.
Results over time
Why tracking the same markers across visits helps you prepare questions.
How to track blood tests
A practical checklist for saving and comparing results.
Reference ranges
What the range printed on your report actually means.
Choosing a lab tracker
What to look for — without fake #1 claims.
Compare common markers
LDL vs HDL cholesterol
Both appear on lipid panels but describe different cholesterol fractions with different roles on your report.
A1C vs glucose
A1C reflects average blood sugar over months; glucose is a snapshot at the time of the blood draw.
TSH vs free T4
TSH and free T4 are complementary thyroid markers that laboratories often report together.
Creatinine vs eGFR
Creatinine is measured directly; eGFR is usually calculated from creatinine and other factors.
ALT vs AST
ALT and AST are liver-associated enzymes that may rise for different reasons depending on context.
Ferritin vs iron
Iron measures circulating iron; ferritin reflects stored iron — both may appear on iron studies.