TweetA male hormone panel is what you need for your test and estrogen levels. That should cover what you really need to know on that part.
You need to always check regular stuff too, like a cbc panel, your liver enyzems etc. To make sure your Red blood cells arent too high, your liver and kidneys are function right.
You can go to a lab yourself and get your hormones checked and its not very hard to read up and see if its good. Thats the cheapest way unless you got good insurance.
The rest I would go to a doctor and have them do it tthat way if somethings wrong they can help you then. But if they arent cool with it and/or you arent honest with them, they might try to put you on a bunch of meds instead of fixing it, if its a gear related problem.