Peptide testing in Canada: how our lab reports work

An independent laboratory tests a sample from the batch, and we do not test our own batches. The batch is released for sale only once its record holds the laboratory’s document, the test date, the laboratory’s name and the test method. Every record, including batches that failed or were withdrawn, is public on our lab reports page.

Testing is third-party; we do not test our own batches. The laboratory is named on every batch record and on the laboratory’s own document. Certificates published so far were issued through Peptide Test Canada and Testides, and where a certificate names a separate analysing laboratory, that name is on the certificate too.

Which laboratory tested a batch is a fact about that batch, so it is read from that batch’s record. The FAQ gives the same answer.

On the certificates published so far, the laboratory reports:

• Identity: which compound is in the vial, by LC-MS/MS.

• Purity: chromatographic purity, as a percentage of the total integrated peak area.

• Net peptide content: the amount of peptide measured in the vial.

• Label accuracy: the amount measured, against the amount stated on the label.

The certificate issued through Testides reports mass, purity and fill accuracy by HPLC-UV, with no LC-MS/MS identity test. For some batches the document is a saved copy of Testides’ online verification page, which shows a summary for a report number rather than the full report, and the batch record says so. A result the record does not hold is shown as not reported, never as a pass.

1. Open the code printed on the vial label. It leads to that batch’s record: the figures copied from the laboratory’s document, the test date, the laboratory’s name and, where it is published, a link to the document itself.

2. Check that the lot number on the label matches the lot number on the record. A certificate for another batch says little about yours.

3. Open the document, where it is published. Not every result in it is copied onto the record, so the document is where everything it shows can be read.

4. Where the laboratory prints its own verification code or report number, check it on the laboratory’s own site, independently of ours.

Without a vial in hand, the lab reports page lists every batch record. Its filter takes a compound, a lot number or a laboratory, and each row opens that batch’s record. If the lot number on your label does not match, write to us with a photo of the label, as the FAQ says.

• Rejected: the batch did not pass, or was entered in error. It is never released or sold, and its record stays public with the figures its certificate printed and the reason.

• Withdrawn: the batch was released and later taken off sale. Its record stays public with the reason, so anyone holding a vial from it can find out.

A testing programme is only checkable if its failures are on the record too. On the lab reports page, the Rejected and Withdrawn filters show them.

A report describes the sample the laboratory received, and the lot number is what ties that sample to a batch and to your vial. A purity figure says how much of the sample is one compound, not which compound it is; that is what an identity test is for. The journal’s guides go further.