Quality

Verified by a lab you don't own.

Every batch is tested by an accredited third-party lab: identity by mass spectrometry, purity by HPLC, endotoxin by LAL. Reports are public, searchable by batch number, and never expire.

The testing process

Purity is measured by High-Performance Liquid Chromatography (HPLC), the gold-standard assay for peptides: the target compound's peak area is reported as a percentage of total detected material. Our minimum threshold is ≥98%. Identity is confirmed by mass spectrometry against the expected molecular weight, and each compound is supplied lyophilized for stability. We do not issue in-house COAs — every certificate names the external laboratory, the report date, and the chromatogram.

You can look up any shipment's results in the COA library, and every peptide monograph records its purity and physical properties alongside its primary-literature citations.