I can't say anything about the lab, but if you get Anavar and take a low dose of 5-10 mg a day broken into two doses 12 hours apart and run 4-6 weeks on followed by 4-6 weeks off you should not have a problem. Anavar is actually FDA approved to treat women with some conditions, but better drugs that are not anabolic steroids have hit the market to treat those conditions. That means doctors will rarely prescribe Anavar. This also means you have to find an underground lab or foreign supplier that you trust to supply you. Always test these sources of Anavar before allowing a woman to take them.
No SARM on the other hand has been FDA approved and I highly doubt you will find any actual legit study that documents the side effects especially in women considering even studies done on human men are almost impossible to find and use such small sample groups that it would be easy to say results in the study may not apply to the vast majority of people. You may find a trainer that has had many women use it, but his study is simply Bro science as he has no control over the subjects when not in his presence training.