Independent side-by-side comparison of Peptides 4 Research and SwissChems — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Peptides 4 Research has more published third-party tests (2 vs 0); SwissChems carries more community reviews (912).
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.
Peptides 4 Research: 2 independent Janoshik assays, across 2 substances, median measured purity 99.5%, most recent 2025-12-29. SwissChems has no independent Janoshik assays on file.
| Attribute | Peptides 4 Research | SwissChems |
|---|---|---|
| Independent lab grade | D | D |
| Third-party tests | 2 tests, avg purity 99.5% | None published |
| Community rating | No reviews | 3.8/5 (912 reviews) |
| COA available | No | Yes |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Year established | Unknown | 2014 |
| Substance | Peptides 4 Research | SwissChems |
|---|---|---|
| Cjc-1295 NO DAC 10MG | 99.27% (1 assay, latest 2025-12-29) | Not tested |
| Retatrutide 10mg | 99.70% (1 assay, latest 2025-10-31) | Not tested |
| Checked | Peptides 4 Research | SwissChems |
|---|---|---|
| Certificates of analysis | Not stated | None found on the site |
| Products listed | Not stated | 142 |
| Public pricing | Not stated | Listed on the site |
| Payment methods | Not stated | Cryptocurrency, Bank Transfer, Credit Card, Zelle |
| Ships to | Not stated | United States, Canada, Worldwide |
| Carriers | Not stated | FedEx, USPS |
| Research-use-only notice | Not stated | Published |
| Stated origin | Not stated | United States |
Peptides 4 Research. Peptides 4 Research: 2 independent Janoshik assays, across 2 substances, median measured purity 99.5%, most recent 2025-12-29. SwissChems 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 Peptides 4 Research's site, and we found no certificates of analysis anywhere on SwissChems' site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Peptides 4 Research does not state a shipping region, and SwissChems states it ships to United States, Canada, Worldwide. Both are read from the vendors' own sites.
Full profiles: Peptides 4 Research, SwissChems.
Full lab-test records: All 2 Peptides 4 Research lab tests.
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