The best thing you can do is have your test levels checked before you start your first cycle. Find out what "normal" is for you. That way, you don't have to guess if you have recovered or not. It also wouldn't hurt to see what your clolesterol is like, as well as your kidney and liver function. If you are running your first cycle, I assume you are going to do a test only cycle, between 300 to 500mg EW, along with an AI for about 12 wks, as well as PCT after. For a cycle like this, you will probably be just fine to cycle without getting labs done during. I would however, check these levels again after, to see where you stand. While on cycle, be sure to check your BP, as this is the main cause for kidney problems with bodybuilders.