QV is the easiest to check as most thier lot #'s are listed on thier website, I think. I read this someplace....or in my searches here I have seen the link.
I have used the deca, eq, and am now usin the enanathate....overall, it seems top be working quite well....no more injection pain than normal, and the website seems to show that amounts are pretty consistant with labeling..I like it.