What the tests show
- HPLC quantifies purity by separating the main compound from related impurities.
- Mass spectrometry confirms identity by measuring molecular weight.
- Together they answer two questions: is this the right peptide, and how pure is it?
Why third-party testing
Independent, third-party analysis adds a layer of verification beyond a manufacturer's own claims. It reduces the chance that a labeling or production error goes unnoticed and gives researchers a neutral record to rely on.
Reading “≥99% purity”
A purity figure such as ≥99% refers to the proportion of the main peak by HPLC for that batch. Always confirm the figure on the COA for your specific lot rather than assuming a catalog-wide value.
For in-vitro laboratory research only. This material is educational and is not guidance for human or animal use. See our research-use-only policy.