Biological Age Calculator | Levine PhenoAge

Enter Your Bloodwork

Chronological Age years

Albumin 3.5 – 5.5 g/dL

Creatinine 0.7 – 1.3 mg/dL

Glucose, fasting 70 – 100 mg/dL

C-Reactive Protein < 1.0 mg/L

Lymphocyte % 20 – 40 %

Mean Cell Volume 80 – 100 fL

Red Cell Dist. Width 11.5 – 14.5 %

Alkaline Phosphatase 44 – 147 U/L

White Blood Cells 4.5 – 11.0 ×10³/μL

Your Biological Age

-- yrs

-10 yrs -5 0 +5 +10 yrs

Marker Breakdown

Marker	Value	Normal	Impact

Targeted Recommendations

Methodology

This calculator implements the Levine PhenoAge algorithm exactly as published. Nine clinical biomarkers and chronological age are combined into a composite mortality risk score using Gompertz proportional hazards coefficients derived from NHANES III data (n=11,432), then converted to a biological age estimate.

The formula uses parametric proportional hazards with a Gompertz baseline: M = 1 - exp(-exp(xb) * (exp(120*gamma) - 1) / gamma) where gamma = 0.0076927. The resulting mortality score is inverted to PhenoAge via: PhenoAge = 141.50225 + ln(-0.00553 * ln(1-M)) / 0.090165.

Reference: Liu Z, Kuo PL, Horvath S, et al. "A new aging measure captures morbidity and mortality risk across diverse subpopulations from NHANES IV." Aging. 2018;10(12):3825-3844. doi:10.18632/aging.101414

This tool is for educational purposes. It does not constitute medical advice. Consult a qualified physician before making health decisions based on these results.