Quality Control
Understanding HPLC
3 min read · Updated 2026-06-01 · VaultLabs Research Editorial
Educational introduction to HPLC purity testing on peptide COA documents.
Research use only. For in vitro research use only. Not for human or animal consumption. Not for human consumption, medical use, or personal application.
Purpose
HPLC separates peptide components by retention time, allowing quantitation of the main peak relative to impurities.
Reported purity is method-specific — compare methods when evaluating suppliers.