What to check
- Match the batch number across the vial, box, COA, product page, invoice, and supplier support reply.
- Check COA recency. A months-old or years-old COA may not prove the batch being sold today.
- Verify the lab name and method. A purity percentage without lab identity, method, chromatogram, and date is incomplete.
- Prefer COA links that resolve to a third-party lab record or verifiable PDF, not only a cropped vendor screenshot.
- Reverse-image-search vial photos when a seller uses polished product images. Stock-photo reuse can hide white-label or relabelled supply.
- For GLP-1 and retatrutide searches, treat quantity accuracy as separate from purity. The FDA warns illegal online products may contain too little, too much, no active ingredient, wrong ingredients, or harmful ingredients.
- Do not treat research-use-only language as safety proof. The FDA has warned about unapproved products falsely labelled for research purposes or not for human consumption.
Source links
- FDA concerns with unapproved GLP-1 drugs
- Eli Lilly counterfeit medicine guidance
- TGA unapproved peptide products safety advisory
The fastest safe path is still the same: batch, COA, label, payment, support, and dispatch proof before trust.
Run the batch checker