Independent side-by-side comparison of Lipo-Peptide and Zhuoyan Peptides — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Zhuoyan Peptides shows higher average tested purity (99.7% vs 99.2%); Zhuoyan Peptides has more published third-party tests (4 vs 2).
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.
Lipo-Peptide: 2 independent Janoshik assays, across 2 substances, median measured purity 99.2%, most recent 2025-08-25. Zhuoyan Peptides: 4 independent Janoshik assays, across 4 substances, median measured purity 99.7%, most recent 2026-03-24.
| Attribute | Lipo-Peptide | Zhuoyan Peptides |
|---|---|---|
| Third-party tests | 2 tests, avg purity 99.2% | 4 tests, avg purity 99.7% |
| COA available | No | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Substance | Lipo-Peptide | Zhuoyan Peptides |
|---|---|---|
| Retatruatide 10mg | 99.24% (1 assay, latest 2025-08-25) | Not tested |
| Cagrilintide 5mg | 99.10% (1 assay, latest 2025-07-11) | Not tested |
| Bb10(bpc 5mg + TB 5mg) | Not tested | purity not reported (1 assay, latest 2026-03-24) |
| Ss-31 10mg | Not tested | 99.69% (1 assay, latest 2025-06-16) |
| Epitalon 10mg | Not tested | 99.54% (1 assay, latest 2025-06-16) |
| Tirzepatide 10mg | Not tested | 99.80% (1 assay, latest 2025-03-06) |
| Checked | Lipo-Peptide | Zhuoyan Peptides |
|---|---|---|
| Certificates of analysis | 7 published on the site | None found on the site |
| Products listed | Not stated | 20 |
| Payment methods | Cryptocurrency, Bank Transfer, PayPal | Not stated |
| Ships to | United Kingdom, Worldwide | Worldwide |
| Carriers | DHL, FedEx, UPS, USPS, Royal Mail | Not stated |
| Stated origin | Hong Kong | China |
Zhuoyan Peptides. Lipo-Peptide: 2 independent Janoshik assays, across 2 substances, median measured purity 99.2%, most recent 2025-08-25. Zhuoyan Peptides: 4 independent Janoshik assays, across 4 substances, median measured purity 99.7%, most recent 2026-03-24. These are third-party Janoshik assays published against the vendor, not the vendor's own certificates.
Lipo-Peptide publishes 7 certificates of analysis on its own site, and we found no certificates of analysis anywhere on Zhuoyan Peptides' site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Lipo-Peptide states it ships to United Kingdom, Worldwide, and Zhuoyan Peptides states it ships to Worldwide. Both are read from the vendors' own sites.
Full profiles: Lipo-Peptide, Zhuoyan Peptides.
Full lab-test records: All 2 Lipo-Peptide lab tests, All 4 Zhuoyan Peptides lab tests.
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