Free Testosterone Calculator
Calculate free and bioavailable testosterone levels
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How it works: Enter your total testosterone, SHBG, and albumin levels to calculate free and bioavailable testosterone using the Vermeulen equation.
Tips
- Free T: 1-3% of total testosterone
- Bioavailable T: 30-50% of total testosterone
- SHBG binds testosterone tightly
- Albumin binds testosterone loosely