Testing desk · Checklist
How to verify a peptide COA in seven checks
A seven-step check for any peptide certificate of analysis: lab verification codes, lot matching, tests actually run, dates and red flags.
The short answer ·
Verify a peptide COA on the issuing lab's own site, not the seller's: use the task number and key (Janoshik), COA lookup (Freedom Diagnostics) or verify portal (Chromate). Then confirm the lot number matches your vial and the compound and amount match the label.
Check that the tests cover identity, not just purity, that the date is recent, and who sent the sample (the client field). In 2025 a vendor owner admitted forging lab certificates.
Certificates of analysis are easy to copy, crop, re-date or fake. In the Paradigm Peptides case, the owner admitted to forging laboratory certificates, according to CBS News (report). These checks take about five minutes.
1. Does the report verify on the lab’s own website?
Go to the lab’s site yourself: type the address, don’t click a link in the seller’s page. Use its verification tool:
| Lab | Verification method |
|---|---|
| Janoshik | Task number + unique key on its Verify page; QR code on reports |
| Freedom Diagnostics | “COA Look Up” on its site |
| Chromate | “Verify” portal on its site |
The returned record should match the document exactly: compound, results, date, client field.
2. Does the lot match your vial?
The batch or lot number on the certificate should match the one printed on your vial. A genuine report for a different lot is evidence about that lot, not yours.
3. Do the compound and amount match?
Does the “sample” line name the same compound and labeled amount as your vial? Watch for reports on a different strength.
4. Which tests were actually run?
| On the report? | Answers |
|---|---|
| Purity (HPLC) | How clean, relative to UV-visible impurities |
| Identity (MS) | Is it the right molecule? |
| Amount / content | How many mg in the vial? |
| Endotoxin | Bacterial endotoxin level |
| Sterility | Viable microbes detected? |
A purity-only report answers one row of five (why).
5. How recent is the test date?
Peptides degrade, and suppliers change. An old report for a product that has been restocked many times may say little about today’s stock.
6. Who sent the sample?
Who sent the sample: the vendor, an anonymous client, or a testing project? Vendor-sent samples are chosen by the vendor (how labs work).
7. Are there signs of tampering?
- Fonts or alignment that change partway through
- Results with suspicious precision or round numbers
- Cropped headers that remove the lab’s name or verification code
- Identical results reused across “different” lots
Step through each of these fields on our interactive annotated COA.
In the news
All news
Frequently asked questions
How do I verify a Janoshik report?
Janoshik's verification page asks for the task number and unique key printed on the report. The record it returns should match the certificate you were given. Reports also carry a QR code.
What if the COA has no verification code?
Then you can't independently confirm it. Contact the lab named on it directly, through contact details from the lab's own site, and treat the document as unverified until confirmed.
Does a valid COA mean my vial is good?
Only if the lot matches and the tests cover what you care about. A genuine report on a different lot, or a purity-only report, tells you much less.
Sources
4 linked records- [1] Janoshik verification page Janoshik Analytical Primary record
- [2] Freedom Diagnostics Testing (COA Look Up) Freedom Diagnostics Testing Primary record
- [3] Chromate (Verify portal) Chromate Primary record
- [4] CBS News: Paradigm Peptides owner admitted forging lab certificates CBS News ·
This explainer is general information about law and laboratory methods, not legal or medical advice. Amino Wire does not provide dosing information. Spotted an error? See our corrections policy.