Every peptide we sell is third-party tested and ships with full documentation of purity and identity. Transparency isn't a marketing line — it's a document.
Transparency you can trust
A Certificate of Analysis is your proof — signed by the lab, tied to a specific batch, published alongside the product. Every compound, every lot, every time.
99%+
Purity Standard
Minimum HPLC-verified purity per lot.
100%
Batches Tested
Every batch, every compound, every time.
ISO 17025
Lab Accreditation
Independent third-party test facility.
Our testing methods
High-Performance Liquid Chromatography separates and quantifies peptide components to verify 99%+ purity.
Precise molecular-weight verification confirms peptide identity and structural integrity.
Amino acid sequence confirmation ensures the compound in the vial matches the labelled research reference.
Each batch is accompanied by documented quality controls tracking identity, content, and appearance prior to release.
How to access your COA
Every compound in the catalog displays its current batch and links to the corresponding Certificate of Analysis.
Click the 'Certificate of Analysis' link below the product description to view the HPLC and mass-spec report for that lot.
Review purity percentage, molecular weight confirmation, and test date. The COA is what shipped with your vial.
COA questions
Need a specific COA?
Email us your order number and we'll reply with the batch-specific PDF within one business day.
Ready to elevate your research?
Same-day fulfilment. Independently verified by ISL Labs. Discreet packaging. Free shipping over $125.