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 700 ng/dL, SHBG 60 nmol/L, Albumin 4.3 g/dL: Free testosterone 102 pg/mL; Free fraction 1.46 %; Bioavailable testosterone 247.7 ng/dL; Free testosterone 353.8 pmol/L.
About the inputs: Total testosterone, SHBG, Albumin