CURATED VENDOR PROFILE
Peptide Sources
Included because Peptide Sources publishes a broad product catalog with third-party certificates attached across most of its product pages.
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Same formula for every vendor: verifiable testing evidence forms the backbone; third-party reviews adjust it within a bounded range. How scoring works →
Score breakdown
Rank Composition — the terms below are the published receipt for this score. Full formula on the methodology page.
- Verified-evidence backbone
- 8.82
- Third-party reviews (bounded)
- +0.11
- Curated review bonus
- +0.15
A broad catalog with 140 public certificate-to-product relationships spanning 123 of 160 reviewed products. Most reports name Freedom Diagnostics or Bioviridian, average about 99.5% reported purity, and expose a public provider-verification path.
Readers who want broad, product-level third-party testing coverage with a provider-verification path across much of the reviewed catalog.
The certificates appear as secondary product-gallery images rather than a dedicated COA archive. 4 older reports are attributed to SW Peptides or P4R Wholesale and treated as legacy or related evidence, not as direct Peptide Sources testing; 8 more have unclear attribution. Most reports cover HPLC purity and identity; endotoxin appears on only 4 reviewed certificates, with no published heavy-metals or sterility panels found in this pass.
Broad third-party COAs with public provider verification
Peptide Sources publishes 140 certificate-to-product relationships across 123 of 160 reviewed products. Of those, 128 are provider-verifiable relationships: Freedom Diagnostics reports with a public Search Code, Bioviridian reports whose printed codes resolve to laboratory-hosted certificates, and a Chromate report verified with its two-part public lookup. The remaining relationships are kept as source-linked documents rather than upgraded beyond what their verification path supports.
10 public certificate examples
Representative product pages showing how this catalog exposes report or verification paths. Examples, not proof for every current lot.
Holding a certificate for this vendor that is not here? Send it to the archive →
Observed from public domain records and the vendor's own site on Aug 27, 2026. Identity facts are shown for context and do not affect scores. We could not read some of this vendor’s pages, so “Unknown” means we could not look — not that nothing is published.