Verify a Peptide COA

A certificate of analysis (COA) is only worth something if the lab that issued it confirms it. Paste the certificate code into the tool above, or check it on the issuing lab’s own site; never trust the vendor’s copy alone.

How do you verify a peptide COA?

Find the lab named on the certificate, then look the report up in that lab’s own records using its code, key or batch number. If what the lab shows differs from the document in front of you, the document is not genuine. Forged and edited certificates circulate in this market because a passing COA sells product, which is why the major labs publish their own verification tools.

Where does each lab verify its reports?

Janoshik Analytical: enter the verification key at janoshik.com/verification or search the task number at public.janoshik.com. The full walkthrough, including how fakes usually fail, is in our Janoshik verification guide.

Freedom Diagnostics: search the certificate’s code in the lab’s open database, which returns the original PDF from the lab’s own server. Our Freedom Diagnostics lookup guide shows how.

MZ Biolabs: contact the lab with the report identifier when no public lookup exists for your report type.

Other labs: Krause Analytical, BT BioLabs, Chromate and TrustPointe are profiled on our testing labs page. The rule is the same for every lab: verify through the lab’s own site or contact channel, never through a link the vendor provides.

What should you check on a COA?

1. The batch number. Match it to the batch on your vial. A certificate for a different batch proves nothing about yours.
2. The lab’s record. Verify the report with the lab, not with the vendor’s copy.
3. The date. A certificate from a year ago says nothing about this month’s production.
4. Quantity, not just purity. 99% purity of 6 mg in a vial labeled 10 mg is still a failed label claim.

Common questions

The vendor’s COA checks out. Is the product safe?

It means that batch tested as claimed when it was tested. It is not a safety guarantee and says nothing about other batches. Check the vendor’s full record on its PeptideCensus profile.

My batch has no published COA at all. Now what?

You can have it tested yourself; our testing labs page explains how. A batch with no published result is itself information about the vendor.

PeptideCensus does not conduct testing. Nothing on this page is medical advice; research compounds are not for human use.