They sell the blue top generics & claim it is 191a & can guarantee it. I asked thme how they could guarantee this as fake assays are a dime a dozen in China & they went silent & never answered. I've used the blue top generics before & they hurt like hell & leave red dime sized welts & cause severe edema. No GH should EVER do that. Plus, since it's label less, it can be anything, including the 192 variety. The price is cheaper than Jins. but you really do not know what you're getting.