At close to 7 days seven in utero, the intercourse-connected gene around the Y chromosome initiates the development of the testicles in male infants. The testicles make testosterone.
在青春期时，睾酮会令孩童出现第一种雄激素上升可见的现象。这些现象包括：[来源请求]
This increases the reproductive Conditioning on the mother and father simply because their offspring usually tend to endure and reproduce. Paternal treatment increases offspring survival as a consequence of enhanced usage of larger high-quality meals and lowered physical and immunological threats.[89] This is particularly beneficial for people considering the fact that offspring are dependent on dad and mom for extended amounts of time and moms have fairly small inter-delivery intervals.[ninety]
Testosterone can be converted to estradiol in adipose tissue (and also to a lesser extent in some other tissues), and that is The main source of estrogen in Males. Also, testosterone is interconvertible with androstenedione, which can be converted into estrogens. When androstenedione is fashioned in adipose tissue, it may be converted into a method of estrogen named estrone.
放射免疫测定法：睾酮主要产生于睾丸小叶曲精管之间的间质细胞，此外肾上腺皮质也能合成。当标本中加入H睾酮和睾酮抗体即产生竞争抑制作用，在反应系统中，当H睾酮和其抗体量保持恒定，则标记抗体复合物的形成量受未标记抗原量所制约，用葡聚糖加膜活性炭进行分离，使结合标记抗原与游离标记抗原分开，测定沉淀的结合部分，进行液闪仪计数（dpm）与标准相比，求出未知样品的含量。
由于睾丸间质细胞分泌雄激素，如果睾丸中没有局部高水平的雄激素，生精小管就会退化，导致不孕。因此，许多经皮雄激素贴片被应用于阴囊。
testosterone, hormone made by the male testis that is certainly accountable for progress from the male intercourse organs and masculine properties, such as facial hair and deepening of the voice. Testosterone was isolated from testicular extracts in 1935.
肾上腺髓质： 肾上腺素、去甲肾上腺素 － 肾上腺皮质： 醛固酮、皮質醇、脱氢表雄酮
成年男子不论服用或施打多少睾酮都无法再次促使阴茎的成长与发育（相反的，错误的使用激素，将可能造成体内原生激素紊乱，将无法自行生成使睾丸及阴茎萎缩，衍生出其他生殖系统疾病）
Consequences ahead of birth are divided into two classes, categorised in relation for the levels of advancement.
由于睾酮能提升体能，一些运动员为保持体育状态或表现，会于赛前使用睾酮。男运动员在赛前数小时，可以将睾酮注射阴囊内，激化身体的状态。但现时大部分的体育项目都已把睾酮定为禁药。
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Sexual arousal and masturbation in women produce compact boosts in testosterone concentrations.[65] The plasma ranges of assorted steroids noticeably raise soon after masturbation in Seen on Tiktok Guys and the testosterone concentrations correlate to These concentrations.[66]