Dude, just wait to take steroids. If you're worried about growth plates it's waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay to early to be juicing.
You are 16. You are not even close to fully matured physically. It is so stupid to even consider taking them in the first place. Terrible idea for you.
I don't want to see you here asking about steroids again. Just forget about it until you are 21.