Peptides you can verify,
not just trust.

What “with a COA”
actually means here.

We do not publish a generic certificate. Each release is tied to a physical lot number and to the analytical file produced for that lot — the same document you receive in the box.

1. Purity by RP-HPLC. Area normalisation at 220 nm, acceptance ≥ 98.0%, typical release 99.1–99.8%.
2. Identity by ESI-MS. Observed mass must match theoretical mass within tolerance.
3. Safety panel. USP <71> sterility, LAL endotoxin, ICP-MS heavy metals, Karl Fischer water content.
4. Lot traceability. Batch number on the vial, the box and the certificate are the same number.