2.7.2. Measurement of Sex Hormones
Total testosterone (TT), sex hormone binding globulin (SHBG), free testosterone (FT), and bioavailable testosterone (BT) were measured on all visits by the subjects. Specifically, blood was drawn from the brachial vein between 7:00 and 11:00 am to measure TT and SHBG. FT and BT were calculated using a calculator (