Bro, when it comes to Chinese generic hgh, it doesn't matter if the top is blue or green or black or pink. One blue top may have 3.33iu of actual somatropin (if you're feeling lucky and it's legit Chinese hgh) and the next blue top is completely bunk! The colors don't mean shit and unless you really trust your source, I'd buyer beware because it is the most faked PED out there and people get scammed on it every day, especially on these so called generics. Most of the time, they end up being hcg or if you're lucky, igf1. Black top, green, brown, take your pick, it's a toss up. The vial may say 10iu but you'll never get anywhere close to that from Chinese generics, which is why I wouldn't bother touching them unless you can run 6iu+ a day (preferably 10iu) for 6 months and know for sure that your source isn't a scammer