Thank you sir. That is the information I was looking for. I also read an article recently stating the DAA only raises test levels for the first couple of weeks but then the levels drop after about a month or so causing it to be categorized as more a fertility enhancer more so that a bodybuilding supplement. That may explain why my levels dropped after taking a DAA product doing blood work before and after. Can someone recommend a proven test booster supp with blood work that works? I've tried Bioforge (pretty good product), Maxgeniz, and Battle fuel XT (did blood work with this one as stated above). I was looking at trying AEN's APE or Xtreme Activate. I'm stacking these with forskolin and Maca root among other run of the mill muscle building supps. Any suggestions would be greatly appreciated. Again, thanks to all who responded! Awesome site!