Independent side-by-side comparison of Ameano Peptides and Mei Peptide — third-party lab grades, tested purity, COA availability, FDA warnings, and community ratings.
Bottom line: Ameano Peptides shows higher average tested purity (99.7% vs 99.2%).
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.
Ameano Peptides: 8 independent Janoshik assays, across 8 substances, median measured purity 99.8%, most recent 2025-09-29. Mei Peptide: 8 independent Janoshik assays, across 8 substances, median measured purity 99.1%, most recent 2025-11-20.
| Attribute | Ameano Peptides | Mei Peptide |
|---|---|---|
| Third-party tests | 8 tests, avg purity 99.7% | 8 tests, avg purity 99.2% |
| COA available | No | No |
| Endotoxin tested | No | No |
| FDA warnings | None on record | None on record |
| Substance | Ameano Peptides | Mei Peptide |
|---|---|---|
| Retatrutide 12mg | 99.84% (1 assay, latest 2025-09-29) | Not tested |
| Bpc-157 10mg (transparent Yellow/blue) | 99.81% (1 assay, latest 2025-08-20) | Not tested |
| Ghk-cu 100mg (red/black) | 99.88% (1 assay, latest 2025-08-19) | Not tested |
| Semax 10mg (transparent Teal/black) | 99.79% (1 assay, latest 2025-08-19) | Not tested |
| Retatrutide 48mg (transparent Purple/black) | 99.97% (1 assay, latest 2025-08-19) | Not tested |
| Mots-c 10mg (transparent Purple/black) | 99.05% (1 assay, latest 2025-08-02) | Not tested |
| Tb4 10mg (pink/black) | 99.56% (1 assay, latest 2025-05-05) | Not tested |
| Tirzepatide 20mg (blue/silver) | 99.31% (1 assay, latest 2025-04-29) | Not tested |
| KLOW (ghk Or Ghk-cu/ Tb-500/ Bpc-157/ Kpv) | Not tested | purity not reported (1 assay, latest 2025-11-20) |
| Sermorelin | Not tested | 99.01% (1 assay, latest 2025-11-19) |
| Cjc-1295 With DAC 5 | Not tested | 98.28% (1 assay, latest 2025-11-19) |
| Tirzepatide 30mg | Not tested | 99.78% (1 assay, latest 2025-07-22) |
| Checked | Ameano Peptides | Mei Peptide |
|---|---|---|
| Certificates of analysis | 61 published on the site | Not stated |
| Products listed | 78 | Not stated |
| Public pricing | Listed on the site | Not stated |
| Carriers | UPS | Not stated |
| Research-use-only notice | Published | Not stated |
Neither — both have 8 on file. Ameano Peptides: 8 independent Janoshik assays, across 8 substances, median measured purity 99.8%, most recent 2025-09-29. Mei Peptide: 8 independent Janoshik assays, across 8 substances, median measured purity 99.1%, most recent 2025-11-20.
Ameano Peptides publishes 61 certificates of analysis on its own site, and we have not read Mei Peptide's site. A published COA is the vendor's own document; the assay figures elsewhere on this page are independent of it.
Full profiles: Ameano Peptides, Mei Peptide.
Full lab-test records: All 8 Ameano Peptides lab tests, All 8 Mei Peptide lab tests.
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