Independent Testing. Total Transparency.

Every batch of peptides we publish has undergone independent third-party analytical testing to verify identity, purity, and consistency. We believe in full transparency — you’ll always see the exact results we receive.

How We Ensure Quality

Our testing process is built to meet the strict expectations of serious researchers. Here’s how each peptide is handled:

Sourcing

Raw materials are acquired from vetted suppliers with strict oversight and documentation.

Quarantine

Each batch is held in quarantine until third-party verification is complete.

Third-Party Testing

Samples are evaluated by Vanguard Laboratory , an independent ISO/IEC 17025:2017 accredited analytical laboratory, to verify identity, purity, and measured content.

Release & COA

Once verified, the batch is labeled, logged, and published with a downloadable COA.

Why Testing Matters

In research, confidence starts with the compound. If you’re unsure what you’re working with, interpreting results becomes difficult and reproducibility suffers. That’s why we rely on independent third-party analysis before batches are released.

PeptiSearch partners with Vanguard Laboratory to evaluate batches for identity, purity, and measured content. The resulting certificates of analysis (COAs) are posted on our site so researchers can review the same data we receive.

We don’t rely on vague claims. We publish documentation. COAs are provided for verification and recordkeeping, helping researchers make informed decisions about the materials they source.

This page will continue to grow as additional batches are tested and new COAs are added over time.

All products are sold for research use only. No medical, therapeutic, or diagnostic claims are made. Certificates of analysis are provided for verification and informational purposes and may be updated as new batches are tested.

Explore Our Research-Use Peptides