If you're worried about passing Mr. T drug tests, even if whatever you're doing is 'legal' they'll still spot an elevated T level and flag you for further tests. It may not disqualify you, but it'll certainly make your life a *****, if not bench you for a goodly while.
Honestly, I don't see why they just don't make it legal for sport doctor supervised Mr. T supplementation. Their whole argument is that it's 'dangerous', but properly administered and post-treated, and regular blood tests, it's no more dangerous than the 15-20 drugs we dope up our 50+ year old old fogie parents. And they don't even get proper blood tests regularly to make sure their blood work is good.
Bah, anyways, if you're worried, don't risk it. They can spot quite a bit these days.
The whole 'fairness' factor is a load of bull. If you can afford good trainers, good equipment, and good sports physicians, you can afford 'other' good stuff too. All the 'big' stars in baseball and a lot in football for that matter are NOT completely natural Mr. T athletes. Bond's arms didn't just magically grow 4 inches over a summer.