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 500 ng/dL, SHBG 15 nmol/L, Albumin 4.3 g/dL: Free testosterone 146 pg/mL; Free fraction 2.92 %; Bioavailable testosterone 354.6 ng/dL; Free testosterone 506.3 pmol/L.
About the inputs: Total testosterone, SHBG, Albumin