Biomarkers

5 biomarkers tracked with reference ranges and optimal ranges

Biomarker Category Unit Reference Range Optimal Range
CD4 Absolute Immunology cells/μL 500.0 – 1500.0 700.0 – 1200.0
CD4 Percentage Immunology % 30.0 – 60.0 35.0 – 55.0
CD4/CD8 Ratio Immunology ratio 1.0 – 4.0 1.5 – 2.5
CD8 Absolute Immunology cells/μL 150.0 – 1000.0 250.0 – 800.0
CD8 Percentage Immunology % 10.0 – 40.0 15.0 – 35.0

Understanding Ranges

Reference range — the clinical "normal" range used by labs. Values outside this range are flagged as low or high.

Optimal range — a narrower band associated with better health outcomes in research. Values within reference but outside optimal are marked "suboptimal".

Always consult a healthcare provider for interpretation of your specific results.