Independent side-by-side comparison of Purity Peptides and SSR Bio — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: SSR Bio has more published third-party tests (1 vs 0); Purity Peptides carries more community reviews (210).
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.
Purity Peptides has no independent Janoshik assays on file. SSR Bio: 1 independent Janoshik assay, median measured purity 99.9%, most recent 2026-04-15.
| Attribute | Purity Peptides | SSR Bio |
|---|---|---|
| Third-party tests | None published | 1 test, avg purity 99.9% |
| Community rating | 4.5/5 (210 reviews) | No reviews |
| COA available | Yes | Yes |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Production country | North America | Not specified |
| Year established | 2022 | Unknown |
| Substance | Purity Peptides | SSR Bio |
|---|---|---|
| Tirzepatide 30MG | Not tested | 99.89% (1 assay, latest 2026-04-15) |
| Checked | Purity Peptides | SSR Bio |
|---|---|---|
| Certificates of analysis | 54 published on the site | 28 published on the site |
| Products listed | Not stated | 58 |
| Payment methods | Not stated | Cryptocurrency, Bank Transfer |
| Ships to | United States, Canada, Worldwide | United States, United Kingdom, Europe, Australia, Worldwide |
| Carriers | Not stated | DHL, FedEx |
| Research-use-only notice | Published | Not stated |
| Stated origin | Not stated | China |
SSR Bio. Purity Peptides has no independent Janoshik assays on file. SSR Bio: 1 independent Janoshik assay, median measured purity 99.9%, most recent 2026-04-15. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
Purity Peptides publishes 54 certificates of analysis on its own site, and SSR Bio publishes 28 certificates of analysis on its own site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Purity Peptides states it ships to United States, Canada, Worldwide, and SSR Bio states it ships to United States, United Kingdom, Europe, Australia, Worldwide. Both are read from the vendors' own sites.
Full profiles: Purity Peptides, SSR Bio.
Full lab-test records: All 1 SSR Bio lab test.
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