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Testosterone reference ranges and diagnosis of testosterone deficiency

Determining what constitutes a low level of testosterone is a major point of confusion in the field of testosterone deficiency — also known as hypogonadism. A recent article adds to the controversy by proposing a new, lower threshold for normal testosterone concentrations on the basis of harmonized reference ranges.

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Correspondence to Abraham Morgentaler.

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A.M. has received payments for consulting or lecture honoraria from AbbVie, Aytu, Bayer and BioTE.

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Morgentaler, A. Testosterone reference ranges and diagnosis of testosterone deficiency. Nat Rev Urol 14, 263–264 (2017).

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