Reason Magazine has an article on steroid use in America, called How Washington Lost the War on Muscle. It also covers testosterone replacement therapy at length, with quotes from Dr. Morgentaler. Since it's a libertarian magazine, their position is we'd all be better off if steroids were legal and supervised by physicians. Like most of their articles it's well written and worth a read. Here's a quote about TRT:
Some doctors will commence treatment for a patient who is on the low side of normal, and some will not. Some doctors will prescribe 200 milligrams of testosterone a week; some, like Morgantaler, believe it's unnecessary in most cases to exceed 100 mg a week; others will prescribe only 50 mg weekly. Some doctors encourage patients to use the gel preparation, while others only provide a patch, an implanted pellet, or injections. Of the latter, some use biweekly injections and some use weekly injections. Some doctors allow patients to inject themselves; others require an office visit. Some doctors will prescribe testosterone to women—who can also be deficient—while many more will not. In short, testosterone-prescribing practices vary wildly. And that fractured landscape presents an arbitrage opportunity for recreational users who have done their homework.