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Predictive accuracy and sources of variability in calculated free testosterone estimates

Gideon Sartorius1, Lam P Ly, Ken Sikaris

  • 1Andrology Department, Concord Hospital, NSW, Australia.

Annals of Clinical Biochemistry
|February 20, 2009
PubMed
Summary

Calculating free testosterone (FT) using total testosterone (TT) and sex hormone-binding globulin (SHBG) formulas provides an approximation when direct measurement is impractical. The accuracy of calculated FT heavily depends on the TT assay and the specific formula used.

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