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Calculate your testosterone percentile.

Calculate free T using the Vermeulen equation and compare to NHANES data.

ng/dL
nmol/L
g/dL (default 4.3)
Free T
--ng/dL
Bioavailable T
--ng/dL
Your Percentile vs NHANES
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Enter your values to see results
Low< 25th percentile
Normal25th - 75th percentile
Optimal> 75th percentile