Research peptides in Canada: checking a supplier
A supplier’s certificate is a claim about a sample. These checks separate a claim you can verify from one you are asked to trust.
Canadian research peptide suppliers almost all publish certificates of analysis. The certificate itself is easy to produce; what matters is whether it can be traced to a laboratory, a method and the lot you are holding. We do not sell peptides or recommend suppliers. This is how to read what a supplier shows you.
1. Find the laboratory, then find the report there
A certificate should name the laboratory that produced it and carry a report number. Go to that laboratory’s own site, not a link in the supplier’s PDF, and look the number up. If the lab offers no way to verify its reports, the certificate rests on trust alone. How to verify a certificate.
2. Match the lot to your vial
The lot or batch number on the certificate should match the label on the vial you received. A certificate for a different lot tells you about a different sample. One with no lot at all cannot be connected to anything you can buy.
3. Check that it measures what matters
- Identity against reference data for the named compound, by a stated technique: is it the compound on the label?
- Purity by HPLC, with the method conditions stated.
- Content: how many milligrams are actually in the vial. A purity figure alone does not answer this. Compare content with the label.
4. Watch for the usual warning signs
Round numbers on every certificate, identical chromatograms across different products, missing dates, results with no method, or a certificate that is only ever shown as an image. Twelve red flags on a peptide COA, and what testing actually finds when a product is underdosed or mislabelled.
5. When to test the vial yourself
If the certificate cannot be verified, covers a different lot, or leaves out identity or content, the only way to know what is in your vial is to test it. Canadian samples can be mailed from any province, and the result comes back on a certificate you can verify. Groups can split the cost of one test.
Common questions
How can I tell if a peptide supplier’s COA is real?
Look the report number up on the issuing laboratory’s own website and compare every field with the PDF: compound, lot, dates and results. A certificate that cannot be found at the lab that supposedly issued it should not be relied on.
Does a certificate from a supplier cover the vial I bought?
Only if the lot on the certificate matches the lot on your vial, and even then it describes the sample that was tested, not every unit. Testing the vial you received is the only way to know about that vial.
Does Canada Peptide Testing sell peptides?
No. We test samples and issue certificates. We do not sell or recommend suppliers.