If you want to juice, juice. If you don't, don't. You cannot go on a message board amongst people you don't even know and ask questions like this and expect any kind of honesty. I have never failed a drug test. And you are not going to get much better of an answer than that.
I used to spend a lot of time and energy wondering who was on, and who was off. Now I realize that it doesn't matter who is on and who is off.
You will get bigger and stronger juicing than not. You will not get too many honest answers from a person who is currently on the sauce. It is amazing though how many people will admit to having used juice after they retire. Most of the guys competing are probably using even in clean organizations. The only thing you do know about anyone but yourself is whether they passed the test. I understand what you are wanting to know, but it is a tough thing to ever find out. And you can never be really sure. Remember, they are illegal. Not anything inherently wrong with them, but for now, in this country, they are unfortunately against the law, and remember that when hoping for an answer to your question.
B