You should always get blood work when messing with your hormones....it's not just for methyl cycles....you CAN cut with the 4AD (like cutting with test)....but I wouldn't. If you are losing as much muscle as you say you are look into your diet first, you may be cutting too extreme too fast, which is usually the case. Once you have everything in check look into something like Max LMG to cut with. Good luck!
Please try to wait longer than a few hours for a response as well....it will eventually get answered by either doign a search or by waiting for someone to answer!