Independent side-by-side comparison of Peptide-S and SwissChems — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Peptide-S holds the stronger independent lab grade (C vs D); 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.
| Attribute | Peptide-S | SwissChems |
|---|---|---|
| Independent lab grade | C | D |
| 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 |
| Checked | Peptide-S | SwissChems |
|---|---|---|
| Certificates of analysis | None found on the site | None found on the site |
| Products listed | 186 | 142 |
| Public pricing | Listed on the site | Listed on the site |
| Payment methods | Not stated | Cryptocurrency, Bank Transfer, Credit Card, Zelle |
| Ships to | United States, Worldwide | United States, Canada, Worldwide |
| Carriers | UPS, USPS | FedEx, USPS |
| Research-use-only notice | Published | Published |
| Stated origin | Not stated | United States |
We found no certificates of analysis anywhere on Peptide-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.
Peptide-S states it ships to United States, Worldwide, and SwissChems states it ships to United States, Canada, Worldwide. Both are read from the vendors' own sites.
Full profiles: Peptide-S, SwissChems.
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