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Gray-Market Peptide Vendor Transparency Methodology
A reproducible way to record what a seller discloses—without certifying product safety, legality, sterility or suitability for human use.1
Bottom line
Transparent documentation can reduce uncertainty about a claim, but it cannot authenticate the vial a buyer receives or convert a research-market product into approved medicine.1 The publication does not publish a “safe vendor” list or link to sellers.1
Disclosure matrix
| Dimension | Evidence to preserve | Report as unknown when… | Never infer |
|---|---|---|---|
| Legal identity | Named company, physical jurisdiction, contact and ownership record | Only a storefront or mailbox is visible | Regulatory authorization |
| Product identity | Exact molecule, salt/form, lot, amount and label image | Names or quantities conflict | Authenticity or clinical suitability |
| Analytical document | Lot-linked final report, method, date, laboratory identity and verification path | The report cannot be tied to the offered lot | Chain of custody, future-batch quality or clinical benefit |
| Sterility/endotoxin | Separate named tests, methods, sample and dates | Only HPLC purity is shown | Sterility from purity |
| Claims discipline | Archived marketing claims and research-use wording | Claims change or lack a source | Human-use authorization from a disclaimer |
| Corrections/conflicts | Correction channel, commercial relationships and update history | No accountable process exists | Independence from silence |
Why no leaderboard appears
A score would imply a calibrated relationship between disclosure and product risk that has not been validated.1 Named seller conclusions would also require current source archiving, legal review, a correction/right-to-reply process and—where product quality is discussed—independent acquisition and testing. None of those conditions is replaced by a polished website or a COA image.1
Non-endorsement boundary
This method is for regulatory and document literacy. It offers no purchasing path, dose, cycle, injection instruction or vendor recommendation for unapproved investigational drugs.1
Authoritative reference points
- FDA warning letters
- FTC advertising and marketing guidance
- TFB COA field map1
- Purity versus sterility explainer1
Verification requirement: Named profiles require current official records and seller statements. This neutral framework does not score companies.
What a reproducible seller audit would require
- Freeze a dated source set. Archive the exact public pages, terms, regulatory records and document links reviewed.
- Separate disclosures from verification. Record what the seller says, what an independent source confirms and what remains unknown.
- Use a correction pathway. Log a seller response without allowing it to silently replace the original snapshot.
- Recheck material facts. Product status, warning letters, ownership, terms and laboratory documents can change.1
- Do not rank beyond the method. Missing validated relationships between disclosure and harm mean no numerical safety score or “best vendor.”1
This framework can support market transparency research.1 It cannot support a safe-seller badge, purchasing recommendation or conclusion about an untested batch.1
Claim-linked evidence notes
Read the linked sources in context: a source’s population, outcome and limitations determine where it applies. Its inclusion does not imply endorsement of this publication or prove an individual result.
- Advertising and Marketing | Federal Trade Commission. Checked 2026-08-25.