99%+ PURITY • THIRD-PARTY TESTED
Certificates of Analysis
Every Pretty Peptides batch is independently verified by third-party laboratories at 99% or higher purity. Transparency isn't a feature — it's the standard.
Our Third-Party Testers
We partner with accredited analytical labs to confirm identity, purity, and mass on every batch we release.
Janoshik Analytical
Czech Republic
Independent mass-spec lab specializing in peptide identity, purity (HPLC) and mass (MS) verification.
Auracore Sciences
United States
ISO 17025-aligned third-party testing for peptide content, water and acetate analysis.
Peptide Sciences QA Lab
United States
HPLC purity and endotoxin screening on every production batch before release.
Need a COA for your batch?
Each shipment includes the lot number printed on the label. Email us your lot number and we'll send the matching Certificate of Analysis within one business day.
Request a COA