In men, low testosterone levels in the body can be supplemented by hormone replacement with testosterone. Testosterone replacement therapy can be prescribed as an intramuscular injection usually given on a biweekly basis; as a patch or gel placed on the skin, or as putty that is applied to the gums of the mouth. Each of the treatments has its risks and benefits. The decision as to which form of testosterone to use depends upon the clinical situation. Discussions between the patient and health care professional often helps decide which medication to use.
In the United States there are currently no preparations that are FDA approved for testosterone replacement for women.
"I like probably many people on this forum had unusually low sex drive for several years, and kept getting told my T was "normal" consistently testing in the 320-330 range. i finally did research and discovered that is not at all normal for someone in their 30s who is otherwise very healthy and who lifts heavy weights 3-4x/week. so i went to an endo and got complete tests w/pituitary MRI done and he agreed my T was low. he asked what treatment options i was interested in, and i said HcG looked interesting to me because i still wanted to have children. he said there is also clomid to consider. when i went back for results he said i had "abnormally normal" LH levels, in other words that i should have a natural pituitary response to produce more LH given my testosterone levels and that was not occurring. otherwise my system was functioning fine. he even diagnosed me with HH as a result. (i also have a weak but not nonexistent sense of smell, and my belief is that i have a milder form of kallmans syndrome, as although i went through puberty on time, i never grew much bodily hair and was a very scrawny kid until i hit the weights hard in my 20s. i think it doesn't get called Kallmans by the medical profession because it is rare and doesn't get diagnosed since puberty occurs)".