Independent side-by-side comparison of Maximum Peps and SSR Bio — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: SSR Bio shows higher average tested purity (99.9% vs 99.7%).
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.
Maximum Peps: 1 independent Janoshik assay, median measured purity 99.7%, most recent 2026-01-28. SSR Bio: 1 independent Janoshik assay, median measured purity 99.9%, most recent 2026-04-15.
| Attribute | Maximum Peps | SSR Bio |
|---|---|---|
| Third-party tests | 1 test, avg purity 99.7% | 1 test, avg purity 99.9% |
| COA available | No | Yes |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Substance | Maximum Peps | SSR Bio |
|---|---|---|
| Glp-3rt 20mg | 99.71% (1 assay, latest 2026-01-28) | Not tested |
| Tirzepatide 30MG | Not tested | 99.89% (1 assay, latest 2026-04-15) |
| Checked | Maximum Peps | SSR Bio |
|---|---|---|
| Certificates of analysis | None found on the site | 28 published on the site |
| Products listed | 67 | 58 |
| Public pricing | Listed on the site | Not stated |
| Payment methods | Not stated | Cryptocurrency, Bank Transfer |
| Ships to | Not stated | United States, United Kingdom, Europe, Australia, Worldwide |
| Carriers | Not stated | DHL, FedEx |
| Research-use-only notice | Published | Not stated |
| Stated origin | Not stated | China |
Neither — both have 1 on file. Maximum Peps: 1 independent Janoshik assay, median measured purity 99.7%, most recent 2026-01-28. SSR Bio: 1 independent Janoshik assay, median measured purity 99.9%, most recent 2026-04-15.
We found no certificates of analysis anywhere on Maximum Peps' 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.
Maximum Peps does not state a shipping region, and SSR Bio states it ships to United States, United Kingdom, Europe, Australia, Worldwide. Both are read from the vendors' own sites.
Full profiles: Maximum Peps, SSR Bio.
Full lab-test records: All 1 Maximum Peps lab test, All 1 SSR Bio lab test.
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