患有原发性或继发性性腺功能减退的男性都需要终身使用雄性激素替代物以防止骨质疏松，并维持正常肌块、红细胞的生成和性功能。直到最近，男性的性腺功能减退仍然是每2～3周一次肌肉注射长效睾酮乙酯，此种用法的睾酮血药浓度仅在几天中处于较高水平，其余几天处于正常水平以? Men with primary or secondary hypogonadism require lifelong use of androgen replacement to prevent osteoporosis and maintain normal muscle mass, red blood cell formation and sexual function. Until recently, male hypogonadism was still injected with long-acting testosterone ethyl every 2 to 3 weeks. The testosterone concentration for this use was at a high level for only a few days and at normal levels for the remaining days.