COA-EXPLAINED
How to read the Growth Stack HPLC chromatogram
Updated 2026-06-04 · X Factor Peptides
Every Growth Stack vial ships with a per-lot certificate of analysis containing HPLC purity, mass-spec confirmation, and a release signature.
The chromatogram
The largest peak is your peptide. Any small peaks before or after represent synthesis side-products or trace solvents. Catalog release threshold is ≥ 98% area purity.
Mass spectrometry
MS confirmation shows the molecular weight. For Growth Stack this should match the published monoisotopic mass within ±0.5 Da.
Independent verification
Enter the lot number from your vial label at /lookup to retrieve the same chromatogram.
SHOP
STACK-GROW is not currently listed. Browse the catalogue for what is in stock, every lot with its own certificate.