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Men's health

Measurement of testosterone: how important is a morning blood draw?

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Pages 1911-1914 | Accepted 07 Aug 2015, Published online: 20 Aug 2015

References

  • Bhasin S, Cunningham GR, Hayes FJ, et al. Testosterone therapy in men with androgen deficiency syndromes: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metabol 2010;95:2536-59
  • Bremner WJ, Vitiello MV, Prinz PN. Loss of circadian rhythmicity in blood testosterone levels with aging in normal men. J Clin Endocrinol Metabol 1983;56:1278-81
  • Guay A, Miller MG, McWhirter CL. Does early morning versus late morning draw time influence apparent testosterone concentration in men aged ≥45 years? Data from the Hypogonadism in Males study. Int J Impotence Res 2008;20:162-7
  • Paduch DA, Brannigan RE, Fuchs EF, et al. The laboratory diagnosis of testosterone deficiency. Urology 2013;83:980-8
  • Stone NN, Miner M, Poage WL, et al. Male androgen deficiency syndrome screening questionnaire: a simplified instrument to identify testosterone-deficient men. J Men’s Health 2014;11:28-37

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