Durham Peptides
CanadaDurham Peptides is a recently launched Canadian research-peptide vendor that advertises Janoshik third-party testing but does not publish certificates of analysis on its website.
Verified 10/10 of 10 criteria · checked 2026-07-27
Durham Peptides (Ontario, Canada) names Janoshik Analytical as its independent testing lab and states that every batch is verified by HPLC and mass spectrometry to 99%+ purity. However, no certificates of analysis are actually displayed or downloadable on the site; they are offered only 'upon request,' with no visible batch numbers, test dates, verification codes, or sterility/endotoxin data. The domain is only about four months old with limited independent reputation, so its transparency claims could not be documentarily verified.
Criterion-by-criterion evidence
Every score below is a recorded, dated observation. Where we could not verify a claim, the criterion is marked Unverified and excluded from the score (but it still counts against coverage).
| Criterion | Wt | Finding | Evidence |
|---|---|---|---|
| Publishes CoAsThe vendor publishes at least one certificate of analysis (CoA) on its own website. | 3 | ✘ No | Lab-results page is a claims page only: 'We maintain Certificates of Analysis for every product.' No CoA image, PDF, or download is displayed anywhere; FAQ states CoAs are 'available upon request.' Source · 2026-07-27 |
| Batch-level CoAsCoAs are tied to a specific batch/lot number, not a single generic certificate per product. | 3 | ✘ No | Site claims 'every batch is independently tested by Janoshik,' but no CoA is shown, so no batch/lot-tied certificate could be observed. No lot numbers visible on lab or product pages. Source · 2026-07-27 |
| Third-party lab namedThe name of the laboratory that ran the analysis appears on the CoA. | 2 | ◐ Partial | Janoshik Analytical is explicitly named as the testing lab across the site. However, no actual CoA is published, so the lab name could not be confirmed on a document. Source · 2026-07-27 |
| Independent / accredited labThe lab is independent of the vendor and/or accredited (ISO 17025), or is a recognised independent peptide lab (e.g. Janoshik, MZ Biolabs). | 2 | ✔ Yes | The named lab, Janoshik Analytical, is a widely recognised independent peptide-testing laboratory. (Note: only the lab's reputation is verifiable here, not that testing actually occurred.) Source · 2026-07-27 |
| CoA verifiable at sourceThe CoA can be authenticated on the laboratory's own website (e.g. a verification code) — actually tested, not just claimed. | 2 | ◐ Partial | Site says results 'can be independently verified directly through Janoshik's verification portal,' but supplies no CoA and no verification code, so no lookup could be completed. Source · 2026-07-27 |
| Identity + purity methodsWhich analytical methods are identifiable on the published CoAs. | 2 | ? Unverified HPLC + MS | Site repeatedly states HPLC purity analysis plus mass spectrometry identity confirmation. Methods are stated in marketing copy only; not confirmed on any viewed CoA document. Source · 2026-07-27 |
| Freshness of the latest CoADate of the most recent CoA visible on the site. | 2 | ? Unverified No dated CoA | No CoA documents are displayed, so no certificate dates are visible. Source · 2026-07-27 |
| CoAs accessible before purchase, no accountCoAs can be viewed without a customer account or a prior purchase. | 2 | ✘ No | CoAs are 'available for all research materials upon request,' i.e. must be requested; none are viewable on the site without contacting the vendor. Source · 2026-07-27 |
| Sterility / endotoxin data publishedSterility or endotoxin (LAL) results are published in addition to purity. | 1 | ✘ No | Only purity and compound identification are referenced. No sterility or endotoxin (LAL) testing is mentioned anywhere on the lab-results or FAQ pages. Source · 2026-07-27 |
| Public complaints / recall handlingA public recall/complaint policy, or documented handling of a disputed batch. | 1 | ◐ Partial | Footer links to a Returns & Refunds policy, but there is no recall or complaints policy and no documented handling of a disputed batch. No FDA warning letters or CoA fraud found; domain registered ~4 months ago (early 2026) with limited reputation history. Source · 2026-07-27 |
Full scoring rubric on the methodology page. How affiliation is handled: read the disclosure.