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Endocrine assessment of impotence--pitfalls of measuring serum testosterone without sex-hormone-binding globulin.
  1. K. J. Hardy,
  2. J. R. Seckl
  1. Department of Endocrine and Metabolic Diseases, Western General Hospital, Edinburgh, UK.


    The pitfalls of measuring only total serum testosterone are illustrated by a 52 year old man whose hyperprolactinaemia was associated with normal total serum testosterone but a raised sex-hormone-binding globulin, giving a low free testosterone. Prolactin suppression with bromocriptine normalized sex-hormone-binding globulin and free testosterone, and restored potency and energy after 30 years of impotence and tiredness.

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