Testing & Quality

How we verify every batch

Quality at PepSource isn't a marketing line — it's a documented pipeline that every batch passes before it reaches the catalogue.

1. HPLC purity analysis

High-Performance Liquid Chromatography separates the compound from any impurities and reports a purity percentage. We target 99%+ on every batch.

2. Mass spectrometry identity

Mass spec confirms the molecular weight matches the reference standard — verifying you're getting exactly the compound on the label.

3. Independent third-party labs

Testing is performed by accredited third-party laboratories, not in-house, so results are impartial.

4. Batch traceability

Every vial carries a batch code linked to its published certificate. Verify yours any time on our Lab Results page.