Every lot of HGH is going to be slightly different in purity, dimer count, and exact iu’s per vial,
The goal is the highest purity with the lowest dimer count. Flash has his HGH synthesized by someone he trusts and has used for many years. Getting HGH tested requires sending it to one guy in Eastern Europe I know of, but
@TG has proven the guy’s reputation used to be shady. The best we can do as HGH consumers is take a full vial injection in our delt and get boood drawn 2 1/2 to 3 hours later to check for serum HGH. The higher the score, the more HGH there is in the vial. Everyone tests differently due to our body chemistry, DNA, age, and other factors. When you test several sources yourself following the exact same protocol you will see which sources have more or less HGH in the vial.
Less bloating and subcutaneous water retention, in my option, is a sign of purity. The higher the HGH purity, the less bloated you will get. I go by personal experience and by the reviews of others I trust on the forums. The color top of the HGH is irrelevant unless you are ordering from the same source and they have different color tops for different HGH sources they buy from. If this is the case you can try the various color tops that supplier carries and compare the results you get from blood work and from your own experience and the experiences of others. One supplier’s blue tops are different another supplier’s blue tops, etc.