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contentuptodate· Content· item f20_25_20894

©2013 UpToDate ® Print Email Adrenal androgen production declines with age Urinary 17-ketosteroid excretion and serum dehydroepiandrosterone concentrations as a function of age in normal women. There is a progressive decline in both measurements after age 20. Data from: Zumoff B, Rosenfield RS, Strain GW, et al. Sex differences in the twenty-four-hour mean plasma concentrations of dehydroisoandrosterone (DHA) and dehydroisoandrosterone sulfate (DHAS) and the DHA to DHAS ratio in normal adults. J Clin Endocrinol Metab 1980; 51:330.