Well its no doubt that there's alot of weird shit, and I think it's very important to find a standard in GH. I can barely afford Chinese Generics let alone, US Pharm. But there are some very simple things we could attempt to do to figure out nearly indefinately if a certain GH is legit without resorting to impossible lab tests.
*Some HGH are notorious for bloat and sides that many report as abnormal or excessive compared to pharm grade. Could we be getting counterfeit GH containing mostly IGF-1 analogues, Anti-diuretic hormone, and/or GH peptides?
-First Step: Find a trusted standard range for an IGF-1 blood tests score using pharm grade HGH. Several blood tests have been done on rips and they routinely score in the 300-400s after 12 hours fasting at 4 IUs/day. If anyone uses prescription GH and got a fasted IGF-1 blood test using a protocol of 4 IUs/day that would determine indefinitely what range we should expect from our GH.
-Second Step: Use an IV protocol. Now if an intravenous savvy user was willing to use HGH IV at 4IUs/day and get a fasted IGF blood test 12 hours after last shot you should not see significantly elevated systemic IGF-1 levels. This would exclude the hypothesis that a GH may simply contain an IGF analogue, in which case systemic levels would still rise regardless of administration.
-Third step: Testing whether its an antidiuretic or not is a little tougher.... GH naturally has some anti-diuretic properties... I'm actually rather stumped on how to measure this. Interestingly, vasopressin administration does in fact cause an increase in growth hormone, whereas GH administration does not dramatically increase the concentration of vasopressin, to my understanding fluid retention from GH is still mediated largely through the renin-angiotensin-aldosterone system. Large doses of an ADH (but not GH significantly) would likely cause Hyponatremia which can be detected in a serum sodium test. I'm not 100% certain that true GH *can't* cause Hyponatremia though...