Hypogonadism (Men)

• Free Testosterone calculator: http://www.issam.ch/freetesto.htm (Vermeulen method)
• Reference: http://jcem.endojournals.org/cgi/reprint/84/10/3666.pdf (Vermeulen)
• Reference ranges: eg http://www.endocrine-abstracts.org/ea/0012/ea0012p104.htm
• 20-39y: TT: 12.4-26.4 nmol/L, FT: 0.19-0.67 nMol/L (Vermeulen method), FAI:29-141
• 40-89y: TT: 4.9-24.4 nmol/L, FT: 0.09-0.55 nMol/L (Vermeulen method), FAI:14-19
• Testosterone replacement: Endo Society Guideline: http://jcem.endojournals.org/cgi/reprint/91/6/1995.pdf
• F Wu: http://content.nejm.org/cgi/reprint/NEJMoa0911101v1.pdf
• But cardiovascular risks: https://docs.google.com/viewer?url=http://content.nejm.org/cgi/reprint/NEJMoa1000485v1.pdf