Free testosterone, calculated
Enter total testosterone, SHBG and albumin from your lab report. The Vermeulen equation, with the paper it comes from and the constants it uses shown.
With Total testosterone 600 ng/dL, SHBG 60 nmol/L, Albumin 4.3 g/dL: Free testosterone 85 pg/mL; Free fraction 1.42 %; Bioavailable testosterone 206.3 ng/dL; Free testosterone 294.5 pmol/L.
About the inputs: Total testosterone, SHBG, Albumin