Unless you're obsessed with competing and 'going pro' there's no need to run test and deca and all that until you're in your early 30s...maybe late 20s at the earliest. When you're 18 your test levels are already through the roof. I'd kill to have the same levels that I had at 18 right now. My neighbor is going to be running cycles through the rest of his life... I shouldn't even say cycling, the only time he came off test in the last 6 years was when he had a surgery and wasn't able to lift during the recovery 
. Roids for sure
.This. He also shouldn't be able to lift some of the weight that he does on compound lifts. Roids. Also, why is OP posting a cac on this site?When you that skinny no way your body holds that much muscle naturally. You gotta be on the pipe if you think dude is clean.
Go back to bodybuilding forum please.