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[Changes in the salivary testosterone level in aged]

H Jinrui1, N Itoh, T Nitta

  • 1Department of Urology, Sapporo Medical University, School of Medicine.

Hinyokika Kiyo. Acta Urologica Japonica
|September 1, 1994
PubMed
Summary
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Salivary testosterone measurement effectively evaluates testicular function, correlating better with serum free testosterone than total testosterone. Salivary testosterone levels decline significantly with age after 50.

Area of Science:

  • Endocrinology
  • Andrology
  • Biochemistry

Context:

  • Accurate assessment of testicular function is crucial for male reproductive health.
  • Free testosterone is a key indicator, but serum measurements can be invasive.
  • Salivary testosterone offers a non-invasive alternative for monitoring testosterone levels.

Purpose:

  • To evaluate the efficacy of a commercial kit for measuring salivary testosterone.
  • To investigate the correlation between salivary testosterone and serum testosterone (total and free).
  • To examine the relationship between salivary testosterone levels and aging in men.

Summary:

  • A commercial kit was used to measure salivary testosterone in 76 males (20-89 years).
  • Salivary testosterone showed a stronger correlation with serum free testosterone (r=0.732) than serum total testosterone (r=0.479).

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  • Salivary testosterone concentration significantly decreased with age after 50 (r=-0.606), mirroring serum free testosterone trends.

    • Impact:

    • Salivary testosterone measurement is a viable, non-invasive tool for assessing testicular function.
    • This method provides a reliable alternative to serum testing, especially for longitudinal studies.
    • Findings contribute to understanding age-related hormonal changes in men.