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 200 ng/dL, SHBG 45 nmol/L, Albumin 4.3 g/dL: Free testosterone 30.8 pg/mL; Free fraction 1.54 %; Bioavailable testosterone 74.8 ng/dL; Free testosterone 106.8 pmol/L.
About the inputs: Total testosterone, SHBG, Albumin