- Joined
- Jul 16, 2018
- Messages
- 312
That's not how it works. The 'purity' number in GH HPLC testing tells you what percentage of the sample's peptide molecules is actual GH. You know the reference retention time of GH and you look for additional peaks in the vicinity of it to identify any structurally similar molecules in the sample. For example, there may be impurities from the peptide synthesis such as deletion products. The 'purity' number then tells you the percentage of the total AUC that is GH as opposed to impurities.
The actual amount of GH in the vial as measured in IU is a different concept and is in some way inferred from the absorbance intensity at the GH peak.
It is true though that the amount of white powder in the vial does not tell you much about how many IU of GH are in the vial. The white powder itself is just the excipients such as mannitol, sorbitol, sucrose, phosphoric acid, sodium Hydroxide, etc. The actual milligrams of GH are distributed among the white powder and are not visible with the naked eye.
I can't agree with it more.I just want to say IU and purity is not the same thing.And you should ask how many iu for each bottles but not how purity for your hgh when you make a purchase.And he is not professional if a sales rep tell you that their hgh is 10 iu 95% purity.