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 900 ng/dL, SHBG 60 nmol/L, Albumin 4.3 g/dL: Free testosterone 139 pg/mL; Free fraction 1.54 %; Bioavailable testosterone 337.3 ng/dL; Free testosterone 481.7 pmol/L.
About the inputs: Total testosterone, SHBG, Albumin