Long Natalie, Nguyen Liz, Stevermer James
Department of Family and Community Medicine, University of Missouri-Columbia, MO, USA.
University of Chicago, Department of Family Medicine, IL, USA.
J Fam Pract. 2015 Jul;64(7):418-9.
Guidelines recommend collecting an early-morning sample to compensate for the natural diurnal variation in testosterone levels. But for men 45 and older, this is unnecessary. Because the natural diurnal variation in testosterone levels tends to diminish with age, it is acceptable to test men ages 45 and older before 2 pm.
指南建议采集清晨样本，以补偿睾酮水平的自然昼夜变化。但对于45岁及以上的男性，这并无必要。由于睾酮水平的自然昼夜变化往往会随着年龄增长而减小，所以在下午2点之前对45岁及以上的男性进行检测是可以接受的。
