Decreased bioavailable testosterone in aging normal and impotent men.

@article{Nankin1986DecreasedBT,
  title={Decreased bioavailable testosterone in aging normal and impotent men.},
  author={Howard R Nankin and Jo H. Calkins},
  journal={The Journal of clinical endocrinology and metabolism},
  year={1986},
  volume={63 6},
  pages={1418-20}
}
Tissue available (bioavailable) testosterone (T) includes circulating free T (FT) and albumin-bound T. A reasonable assessment of bioavailable T can be made by using 50% ammonium sulfate to precipitate sex hormone-binding globulin (SHBG)-bound T. The supernatant non-SHBG-bound T (non-SHBG-T) correlates well with physiological androgen activity. To assess bioavailable T in normal aging men, we analyzed serum samples from seven healthy aged men (65-83 yr old) and compared the results to samples… CONTINUE READING