Novedex XT does work, but keep in mind that it not only increases TEST it also surpresses Estrogen. If you want to keep your sex drive this is not good. As you need estrogen to have a drive. I have gone through 4 bottles of the stuff. It does work. And a buddy of mine did the blood work thing, and it did make a rather large increase in his TEST levels. Just don't expect overnight results. It will take a week or two for you to notice a difference. Gaspari makes good stuff.