Gall H, Glowania H J, Fischer M
Andrologia. 1979 Jul-Aug;11(4):287-92.
The testosterone level in plasma is measured in 10 males by radioimmunoassay (RIA) at the following times: 07.00 h, 08.00 h, 09.00 h, 10.00 h, 13.00 h, 16.00 h, 19.00 h, 23.00 h and 03.00 h. A circadian rhythm can be noted. Peak levels are reached between 07.00 h and 10.00 h. At 19.00 h testosterone values reach their minimum and rise at night. In the morning between 07.00 h and 10.00 h testosterone levels seem to have a plateau. Between the morning and the evening the values show great differences.
采用放射免疫分析法（RIA）在以下时间点对10名男性的血浆睾酮水平进行测定：07:00、08:00、09:00、10:00、13:00、16:00、19:00、23:00和03:00。可以观察到昼夜节律。峰值出现在07:00至10:00之间。19:00时睾酮值降至最低，并在夜间上升。早晨07:00至10:00之间睾酮水平似乎呈平稳状态。早晚之间的值存在很大差异。
