Choose your track

To calculate your biological age, get a blood test. Your next choice determines which biomarkers need testing:

Amateur athlete

Ranked after pros in the Ultimate League

Testing window: unrestricted
Entry: $10
Aging clock: Pheno Age

9 biomarkers needed

White blood cell count (WBC)
Lymphocytes
Mean corpuscular volume (MCV)
Red cell distribution width (RDW)
Albumin
Alkaline phosphatase (ALP)
Creatinine
Glucose (Blood Sugar)
C-reactive protein (CRP)

Professional athlete

Ranked ahead of amateurs in the Ultimate League

Testing window: 2026
Entry: $100
Aging clocks: Pheno Age + Bortz Age
Bonus: Coupon for 10% off all merch

22 biomarkers needed

White blood cell count (WBC)
Lymphocytes
Neutrophils
Monocytes
Red blood cell count (RBC)
Mean corpuscular volume (MCV)
Mean corpuscular hemoglobin (MCH)
Red cell distribution width (RDW)
Albumin
Alanine aminotransferase (ALT)
Alkaline phosphatase (ALP)
Gamma-glutamyl transferase (GGT)
Urea
Creatinine
Cystatin C
Glucose
Hemoglobin A1c (HbA1c)
Total cholesterol
Apolipoprotein A1 (ApoA1)
C-reactive protein (CRP)
Sex hormone-binding globulin (SHBG)
Vitamin D (25-OH)

Not ready for a blood test yet? Try our longevitymaxxing lifestyle challenge instead