Mar 10, 2026 at 2:16 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.
Last edited: Mar 10, 2026 at 6:16 PM
18 16ingrid_STO, pete_nash, hank_denver and 15 others
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