there is almost a 90% chance that the usmc wont test you for aas. I know for a fact that they wont test you when you are joining. They only test for narcotics. Your biggist worry while in the corps would be getting caught with the actual gear or someone telling your chain of comand that you are on them. Just some advice, Tell no one in the corps that you are taking aas and if any asks you take creatine, protien, and andro-6. That will usually shut them up. At least thats what I told them and they left me alone.