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 600 ng/dL, SHBG 30 nmol/L, Albumin 4.3 g/dL: Free testosterone 134 pg/mL; Free fraction 2.23 %; Bioavailable testosterone 325.4 ng/dL; Free testosterone 464.8 pmol/L.
About the inputs: Total testosterone, SHBG, Albumin