The drugs they check for are narcotics...they do check for steroids, but only the regular body building ones...testosterone or whatever they are...and, that's a special test that cost a few thousand, or something like that. I believe that they randomly take a few of the urine samples from all over the military to test for that particular type of steroid. Otherwise, someone has to suspect that you're using for body building and go thru the process of having you tested formally.
In other words, they dont test for spiro and/or estrogens.
You would have to go to an outside doctor and pay for it yourself...including the medications. You will also need to prepare yourself for covering up the changes in your body...and that's where it gets hard.
Sooner or later you're going to have to reveal that you're growing breasts. You get a physical every year...depending on your job you might do EKG's...which means that they hook up electrodes on your chest...etc. When they do develop, you could do a pre-emptive strike and go to the doc and feign innocence and shyly reveal and say you think you have gynacomastia (sp?). He/she may run some tests, but should find nothing and eventually just let it go.
The other problem is covering up your chest. You'll need some kind of "chest binder". You can buy actual ones online, or you could try to find a woman's sport top and use that...not an actual bra because the straps will most likely show thru some uniforms. But rather...like a tank top with extra wide shoulders (for lack of a better term)...so it doesnt stand out...white and/or grey...since those colors will not only blend in with the uniforms, but are gender neutral incase you have to take your shirt off infront of others. Makes the explaination easier...remember, it's all about plausible deniability. Tell them you have gynacomastia and hopefully you'll get more sympathy than teasing.
I highly recommend not doing this while you're in the military.
Again, I highly recommend not doing this while you're in the military. You are kind of playing with fire. If you do it, then you'll need to be emotionally strong and have very very thick skin for possible teasing and/or whatever. Also, if you *have* to do it, then wait until after basic training...actually, wait until after basic training *and* your tech school.
Good luck to you. I hope it works out.
Astyria.