May 23, 2026 at 6:14 PM#6
I'm a digital forensics consultant and I want to add some technical methods for detecting fake COAs:
PDF Metadata Analysis:
- Right-click the PDF > Properties > look at "Created with" field
- Real lab reports: created with ChemStation, Empower, MassHunter, or similar analytical software
- Fake reports: created with Adobe Photoshop, Canva, Microsoft Word, Google Docs
Image Analysis:
- Save the HPLC chromatogram image and do a reverse Google Image search
- Run through an Error Level Analysis tool (fotoforensics.com) to detect image manipulation
- Look for JPEG artifacts around text that suggest editing
Document Consistency:
- All text should be the same resolution
- Zoom to 400% — edited text often shows aliasing differences
- Check if text is selectable (real reports usually have selectable text, photoshopped ones are flat images)
These methods caught 3 fake COAs that looked convincing at normal zoom.
30 0VendorMark, COA_Karl, MikeFit_NJ and 27 others
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May 23, 2026 at 8:31 PM#7
As someone who runs a legitimate peptide company (I won't name it here to avoid appearing self-promotional), I want to say that the post above is 100% accurate and it's a huge problem for honest vendors too.
We spend $3,000-5,000 per month on third-party testing. Every batch gets tested. Real testing is EXPENSIVE. When a scam vendor posts a fake COA and sells at half our price, customers wonder why they should pay more.
The answer is: because real testing costs real money, and real peptides cost real money to manufacture properly.
If a vendor's prices seem impossibly low AND they have "perfect" COAs, ask yourself how they can afford both the product AND the testing at that price point. Usually the answer is: they can't, and at least one of those things is fake.
29 24VendorMark, COA_Karl, MikeFit_NJ and 26 others
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May 23, 2026 at 10:48 PM#8
This thread is being added to the wiki as required reading. Understanding COA verification is a fundamental skill for anyone buying peptides.
Quick Reference — COA Verification Steps:
1. Check if the lab exists (Google the name, address, phone)
2. Verify the lab is accredited (look up in accreditation databases)
3. Contact the lab directly to verify the specific report number
4. Check that the batch number on the COA matches your vial
5. Examine the PDF metadata
6. If chromatogram is included, verify it's not stolen from another source
If a vendor refuses to provide a COA, or if their COA fails any of these checks, do not buy from them.
28 23DoseLogDan, SleepFixSam, PurityPaulOR and 25 others
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Janoshik Analytical — Independent Testing
Trusted third-party HPLC & mass spectrometry analysis. Verify peptide purity with the lab the community relies on. Independent. Accurate. Transparent.
Verify Your PeptidesGL Biochem (Shanghai) Ltd. — Direct Manufacturer
Est. 1998. The synthesis house behind the vials you send for testing. ISO 9001 and cGMP certified, 1,500+ staff, batch-specific COA with every order.
Browse GL BiochemMay 24, 2026 at 1:05 AM#9
One final point I want to emphasize: a COA is only as trustworthy as the lab that issued it AND your ability to verify it.
The scammers know that most buyers won't verify. They count on it. They know that a professional-looking PDF with some numbers on it is enough to satisfy 90% of buyers.
Be in the 10%. Verify. Test. Protect yourself and this community. Every fake COA we expose makes it harder for the next scammer.
I'll continue reviewing COAs that members submit. If you want me to look at a vendor's COA, DM me with the PDF and I'll give you my honest assessment.
27 22JessicaM_2024, TomFromTexas, mike.trainer_LA and 24 others
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