正常的总睾丸激素水平取决于男人的年龄,但通常范围为240–950 ng / dL(毫微克每分升)或8.3-32.9 nmol / L(毫微升每升)。根据美国泌尿科协会的说法,当总睾丸激素水平低于300 ng / dl时,可以支持低睾丸激素的诊断。一些睾丸激素总水平正常的男性的睾丸激素水平较低,其游离或生物利用度较低,这仍可解释其症状。血清睾丸激素水平低的男性应检查其他激素,尤其是黄体生成激素,以帮助确定其睾丸激素水平低的原因,并帮助选择最合适的治疗方法(最值得注意的是,睾丸激素通常不适合男性性腺功能减退症的继发性或三级形式,通常会降低LH水平)。
通常对有症状的总睾丸激素水平低于230 ng / dL的患者开处方。如果血清总睾丸激素水平在230至350 ng / dL之间,则应检查游离或可生物利用的睾丸激素,因为当总睾丸激素水平偏低时,睾丸激素水平通常较低。
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