I would make sure that your liver and kidneys are in good health before going on. I would also get a count of your total testosterone. That way, you'll know what normal is for you. Once you go on cycle, you will suppress your natural production. After cycle, you'll complete your PCT and then you will ideally get your test levels checked around 6 wks after PCT is over. The normal range is 300-1200ng/dl. If you found yourself at 450ng after the cycle, this would be considered in the normal range, but if your precycle labs came back at 700ng, you will know that you have not recovered yet. This is the most responsible thing that a steriod user can do. Too many guys just jump in blindly and many end up with issues because of it. Kudos to you, my friend!