Hey bro, if you want to speak with Naps about authentication, you'll want to go to the help center and ask there. As for the product, I can tell you that Naps get their GH directly from the original Hyge factory. I've used them and had a good response. Last year I used the 200iu kits. This year, I used the 100iu kits. Both of them were gerat. Some of the best GH I have used. But for peace of mind, drop them a message and if you really want to check up on the quality, you can always have labs done to check your IGF and GH levels.