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 45 nmol/L, Albumin 4.3 g/dL: Free testosterone 171.4 pg/mL; Free fraction 1.9 %; Bioavailable testosterone 416.2 ng/dL; Free testosterone 594.3 pmol/L.
About the inputs: Total testosterone, SHBG, Albumin