How our lots are tested
Every lot is analysed by an independent third-party laboratory before it is listed: purity by reversed-phase HPLC and identity by LC-MS, with endotoxin and net content where the report includes them. The laboratory is identified on the signed report, and that report is published in full on the batch page, so the figures on the product page can always be checked against their source rather than taken from us.
What we require
A laboratory testing for us must be independent of BuyUK Peptides and of the manufacturer, must name the analyst and the instruments on each report, must report the raw chromatogram and mass spectrum rather than figures alone, must hold the sample under documented conditions, and must be willing to confirm a report's authenticity to a third party who quotes its reference. We do not accept manufacturer certificates in place of independent testing.
Sampling
Samples are drawn from the sealed lot and sent to the laboratory with the batch number and the expected identity. The laboratory does not know the result we expect for purity.
Verifying a report
Every report carries the laboratory's own reference. To confirm a certificate is genuine, contact the laboratory named on it and quote that reference; where the laboratory offers online verification, the batch page links to it. If a certificate you have been shown does not appear in our register, it did not come from us.