Testosterone free and total

  Testosterone is the main male sex steroid produced by Leydig cells in the testes, with an average secretion rate of 7 mg/day. Based on calculations from spermatic vein/peripheral vein gradients. Leydig cells can also release intermediate metabolites such as androsterone, androstenedione, 17-OH progesterone, progesterone, and Pregnenolone. Approximately 5% of the T pool is of […]

Average testosterone levels by age

What we know about Testosterone In men, testosterone, the principal circulating androgen, has essential reproductive functions in establishing and maintaining the male phenotype. It is very closely associated with the male sex drive and has a major role here. Testosterone helps to regulate the metabolism and is sometimes called the anabolic hormone as it stimulates […]

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