How can I tell if a COA is fake?

Look for a verifiable report ID, a matching lot number, realistic purity figures, an observed molecular weight and a lab you can contact. Missing any of these is a warning sign.

Can a vendor reuse a real COA?

Yes. Recycled COAs are common. A genuine report from an old batch says nothing about the vial you received.

What does a revoked report mean?

The lab has withdrawn the report, often because it was misused or altered. Do not trust a revoked report.

What is the most reliable way to check a peptide?

Send the exact vial you received to an independent lab and get your own verifiable report.

How to Spot a Fake COA: 8 Red Flags (and How to Verify a Real One)

Forged, edited and recycled Certificates of Analysis are among the biggest problems in the research peptide market. A professional-looking PDF costs nothing to fake. This guide shows you the warning signs and how to check any report in under a minute.

Why fake COAs are so common

Recycled reports: one genuine COA reused across many batches
Edited reports: a real report with the purity or mass changed
Fabricated reports: a document made up from scratch, sometimes using a real lab's name
Wrong-compound reports: a real COA for a cheaper peptide relabelled as a more expensive one

Comparing a peptide vial label with its Certificate of Analysis

8 red flags of a fake COA

#	Red flag	Why it matters
1	No verification ID or QR code	Real labs let you confirm reports independently
2	Lot number does not match your vial	The report does not cover your batch
3	Exactly 100.00% purity	Real HPLC results almost never show perfect purity
4	Report dated years ago	Unlikely to reflect current stock
5	No observed molecular weight	Identity was never confirmed
6	No net content	Fill dose is unknown
7	Mixed fonts, blurry areas, misaligned numbers	Signs of editing
8	Lab cannot be found or contacted	The "lab" may not exist

Real vs fake: side by side

Feature	Genuine third-party COA	Suspicious COA
Report ID	Unique, verifiable online	Missing or not verifiable
Lot number	Matches the vial	Missing, generic or mismatched
Purity	Realistic, e.g. 98.7%	Round or perfect, e.g. 100%
Identity	Observed MW reported	Not reported
Chromatogram	Included with peaks and RT	Missing or low resolution
Lab contact	Real address and support	None

How to verify a COA in 3 steps

Find the report ID printed on the certificate, or scan its QR code.
Go to the issuing lab's own website. Never trust a verification link supplied only by the seller.
Compare every field: compound, lot, purity, net content and dates must match exactly.

For PRISM reports, enter the ID on our verification portal. A report that is revoked or not found should not be trusted.

The safest option: test it yourself

Testing the vial you actually received is the only way to be certain. Send a sample to our lab and get your own verifiable report. See peptide testing in Canada for pricing, or learn how to read your COA.