How to Look Up a Peptide COA by Batch Code
Last updated October 6, 2026
Find the lot on the vial — a printed lot number or, for some vendors, the cap and seal colour — and search it or the product name at /verify. If we hold a certificate for that lot, the lot, size and lab can be compared with the label; if not, no certificate we publish describes that vial. For research use only — not for human consumption.
Where the lot code appears
The lot or batch code is on the vial or box label; here the two words mean the same thing, one production run. Some vendors print a number. Others identify a run by the colour of the cap and seal, and the certificate then names that colour as its lot — many of the certificates Peptuvia holds name their lot that way.
| What the certificate shows | What the COA library says |
|---|---|
| A printed lot number, or a cap and seal colour | The lot, exactly as the certificate prints it |
| No lot at all | “Lot not stated on this certificate” |
| A lot that was never entered in the record | “Lot not recorded” |
Codes that start PV- are Peptuvia's own references for the certificates it holds. They appear on the certificate pages and in the library, not on vials, so a label won't carry one.
Looking it up
The search at /verify takes a lot number, a cap colour, the lab's own code from a certificate, a product name or a vendor name, and codes are matched loosely: case, spaces and dashes don't matter. A match opens the certificate's page, which shows the product and vial size, the vendor, the lot, the lab that ran the test, the test date and the results the certificate reports — typically HPLC purity and a mass-spectrometry identity check — with the certificate document where one is on file.
Results that vendors reported to Peptuvia appear in the same search, labelled separately from the certificates it holds. The labs whose certificates Peptuvia publishes are listed on the testing page.
Reading the match
Three fields carry the comparison:
- Lot: when the lot on the certificate is the lot on the label, the certificate describes that vial's production run.
- Size: a certificate written against one vial size says nothing about another size.
- Lab: a named lab can be contacted, and where it offers one, its own copy of the result can be compared with the certificate.
Purity on a certificate is a record of one lot, not a property of the compound. Identity comes from mass spectrometry, which confirms the molecular weight. How each field reads is covered in how to read a COA and HPLC vs mass spec.
If there is no match
We hold no result for that lot. A certificate covers the lot it names and nothing else. Vendors ship thousands of kits and restock continuously, so there's no guarantee your order will come from the tested lot. We don't test every batch.
Frequently asked questions
Where is the batch code on a peptide vial?
On the vial or box label: a printed lot or batch number or, for some vendors, the colour of the cap and seal. Codes that start PV- are Peptuvia's own references for the certificates it holds and aren't printed on vials.
What does it mean if no certificate matches the lot?
We hold no result for that lot. A certificate covers the lot it names and nothing else. Vendors ship thousands of kits and restock continuously, so there's no guarantee your order will come from the tested lot. We don't test every batch.
Does one certificate cover every vial of a product?
No. A certificate covers the lot it names and nothing else. A different production run, or a different vial size, isn't described by it. Vendors ship thousands of kits and restock continuously, so there's no guarantee your order will come from the tested lot.
Can a certificate be checked with the lab that issued it?
Where the lab offers it, yes. A certificate that names its lab can be compared with the lab's own copy, and some certificate pages at /verify link to that copy directly.
For Research Use Only. All products are sold as research chemicals for in-vitro laboratory study. Not for human consumption, medical, veterinary, or household use.