title: Features of diagnostics and treatment of partial androgen deficiency of aging men.
abstract: BACKGROUND
  Decreasing of testosterone level is an important part of a male elderly.
  
  
  METHODS
  To describe this phenomenon a PubMed and national databases were searched for 17β-dehydrotestosterone, common testosterone, free testosterone, 17β-estradiol, luteinizing hormone, partial androgen deficiency of aging men.
  
  
  RESULTS
  The reduction in intensity of the processes of tissue renewal of the testicles results in a partial androgen deficiency of aging men. A decrease in the levels of total and free testosterone and an increase in the levels of 5α-dihydrotestosterone, 17β-estradiol, sex hormone binding globulin, LH and FSH, along with a decrease in the amplitude of the rhythm of incretion of LH, FSH and total testosterone will testify to a deficiency of testosterone.
  
  
  CONCLUSIONS
  It is very important to make an individualized selection of the dose of testosterone preparation which enters the blood plasma.
authors: Department of Urology, North-Western State Medical University named after I.I. Mechnikov, St. Petersburg, Russia.
authors: Alexander
authors: A
authors: Pechersky
keywords: 17β–estradiol; 5α–dehydrotestosterone; common testosterone; free testosterone; luteinizing hormone; partial androgen deficiency of aging men