Not only that, but it doesn't matter - aside from just pure curiosity. Genetics CANNOT be overstated, no matter how much they are discussed and attributed for the amazing evolution of bodybuilders over the past century. Also, I find it hard (read: impossible) to believe RC's AAS aren't prescription; which means he can easily take them on the road/travels.
As a side note, 4g test/week is just nonsensical and a shoddy attempt at hyperbole and exaggeration beyond all measure of reason. I tried 2g/week once because I have an unlimited supply, and it made me feel terrible and DID NOT increase my gains.