HPLC vs Mass Spectrometry: How Research Peptides Are Verified
June 1, 2026 · by Administrator
When a research peptide is characterised, two questions matter above all: how pure is it, and is it the compound it claims to be? Two industry-standard techniques answer those questions.
HPLC — measuring purity
High-Performance Liquid Chromatography separates a sample into its individual components as they pass through a column at different rates. The result is a chromatogram showing what proportion of the sample is the target peptide versus impurities — the purity percentage you see on a Certificate of Analysis. For tested batches we target ≥99% purity.
Mass spectrometry — confirming identity
Mass spectrometry measures the molecular weight of the compound. Matching the measured mass to the expected value confirms the peptide’s identity. HPLC alone tells you how pure a sample is; mass spectrometry tells you whether it is the right molecule in the first place.
Why both together
Used together, the two methods verify that you are receiving the correct compound at the stated purity. You can read more analytical terms in our peptide glossary, or see our full process on the quality & testing page.
All products referenced are supplied strictly for laboratory and research use only and are not for human consumption.
For research use only. Not for human consumption. This article is educational and not medical advice.