The Vendor Vetting Checklist
The peptide market is full of sellers and almost no independent checking. Here’s the checklist we run before trusting any vendor. Education, not medical advice.
1. The COA test
A real Certificate of Analysis names the testing lab, a lot number, a date, and a result you can tie to the exact product. Reused, undated, or self-issued COAs are decoration, not proof.
- Match the lot on the COA to the lot on the vial.
- Confirm the report number with the lab.
- Third-party only, never the seller’s own “lab.”
2. The legal and enforcement picture
The ground keeps shifting. The FDA ended compounding discretion for the major GLP-1s and nullified “research use only” as a shield. Know whether your source is operating in the open or in the gap.
3. The red flags
- “DM for a source.”
- Prices far below everyone else.
- Cure or treatment claims.
- Nothing you can verify independently.
We run this every week.
Assaylog is the independent watchdog: vendor scorecards, COA teardowns, and the enforcement beat. Free.
Subscribe free →Assaylog is independent education and news, not medical advice. Nothing here is a recommendation to buy, use, or dose any compound. Talk to a qualified clinician about your health.