Every batch of peptides sold by Velyx Research Ltd is supplied with a Certificate of Analysis confirming identity and purity via UPLC/MS testing carried out at the point of manufacture. This page publishes all current COAs so researchers can verify exactly what they are receiving.
Current status
COA Library
Search by product name to find the latest Certificate of Analysis.
What is a COA?
Understanding Certificates of Analysis
A Certificate of Analysis is a document issued by a testing laboratory that confirms the identity, purity, and quality of a specific batch of compound. It is the primary document researchers use to verify that what they have received matches the stated specification.
Purity (HPLC)
Confirms the percentage of the active compound relative to total content, measured by High Performance Liquid Chromatography.
Identity confirmation
Confirms the compound is what it claims to be, typically via LC-MS mass spectrometry matching the expected molecular weight.
Batch reference
A unique batch number linking the COA to a specific production run — allowing full traceability from lab to delivery.
Endotoxin testing
Measures bacterial endotoxin levels in the sample — relevant for research applications requiring low endotoxin material.
All Certificates of Analysis are issued by our manufacturing partner and reference specific batch numbers, confirming purity and identity at the point of production. We are working toward independent third-party verification as the next stage of our quality programme. COAs are published before the relevant batch goes on sale. All products sold by Velyx Research Ltd are for research purposes only and are not intended for human consumption. Velyx Research Ltd — Registered in England & Wales. Company No. 03697395.