How do I spot peptide source red flags?
The biggest peptide source red flags are missing batch-specific COAs, vague testing, miracle claims, no clear support path, aggressive discount pressure, and labels that do not match the listing. Pepdex does not publicly name vendors, but the vetting pattern is public.
Red flags
- No batch-specific COA.
- COA missing identity or contamination testing.
- Claims that sound like guaranteed medical outcomes.
- No clear storage or shipping policy.
- No support response when you ask basic batch questions.
- Vial label does not match the product page.
Green flags
- Batch number visible and matched to testing.
- Clear refund/reship policy for damaged product.
- Realistic language, not miracle claims.
- Responsive support that answers testing questions directly.
Pepdex boundary
Public Pepdex pages teach source-vetting. Member-only source pages are gated and methodology-based. Pepdex does not sell peptides.
Pepdex is an educational reference, not medical advice. Peptides vary in legal, approval, and evidence status. This answer is meant to explain the concept, not prescribe a protocol or replace a qualified clinician.
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Last updated 2026-07-07.