Independent side-by-side comparison of Certified Peptides and VPeptide — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: VPeptide holds the stronger independent lab grade (ungraded vs A); Certified Peptides has more published third-party tests (4 vs 0); VPeptide carries more community reviews (520).
Every figure below is either measured by an independent laboratory or read from the vendor's own website, and the source is named against it. PeptideAtlas is not affiliated with either vendor.
Certified Peptides: 4 independent Janoshik assays, across 4 substances, median measured purity 99.7%, most recent 2026-04-01. VPeptide has no independent Janoshik assays on file.
| Attribute | Certified Peptides | VPeptide |
|---|---|---|
| Independent lab grade | Not graded | A |
| Third-party tests | 4 tests, avg purity 99.3% | None published |
| Community rating | No reviews | 4.8/5 (520 reviews) |
| COA available | No | Yes |
| Endotoxin tested | No | Yes |
| FDA warnings | None on record | None on record |
| Production country | Not specified | Canada |
| Year established | Unknown | 2022 |
| Substance | Certified Peptides | VPeptide |
|---|---|---|
| Retatrutide 5mg | 99.70% (1 assay, latest 2026-04-01) | Not tested |
| Selank 10mg | 99.79% (1 assay, latest 2026-03-31) | Not tested |
| Epitalon 50mg | 98.00% (1 assay, latest 2026-03-31) | Not tested |
| Lpamorelin 10mg | 99.77% (1 assay, latest 2026-03-31) | Not tested |
| Checked | Certified Peptides | VPeptide |
|---|---|---|
| Certificates of analysis | Not stated | None found on the site |
| Products listed | Not stated | 160 |
| Public pricing | Not stated | Listed on the site |
| Payment methods | Not stated | Cryptocurrency |
| Ships to | Not stated | Canada |
| Carriers | Not stated | Canada Post |
| Research-use-only notice | Not stated | Published |
Certified Peptides. Certified Peptides: 4 independent Janoshik assays, across 4 substances, median measured purity 99.7%, most recent 2026-04-01. VPeptide has no independent Janoshik assays on file. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
We have not read Certified Peptides' site, and we found no certificates of analysis anywhere on VPeptide's site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Certified Peptides does not state a shipping region, and VPeptide states it ships to Canada. Both are read from the vendors' own sites.
Full profiles: Certified Peptides, VPeptide.
Full lab-test records: All 4 Certified Peptides lab tests.
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