free testosterone

Hey guys, So I went to a doc two weeks ago that specializes in TRT. A little background on myself. I am 25 years old, 5'11" and 190 lb. When I was around 20 years old I started messing around with pro hormones and steroids without looking at the later consequences. As of the past 2 years my...

It has been traditionally thought and believed that sex hormone binding globulin (SHBG) is more or less correlated to estradiol (E) levels and the amount of free testosterone (FT). Free - testosterone is the portion of testosterone (T) that is available to enter a cell and bind to the androgen...

As shown in the figure above, about 2 percent of the testosterone in the body is active. This “free testosterone” is not attached to binding proteins that would prevent it from interacting with its receptor. About 40 percent of the body's testosterone is attached to albumin. This is a protein...