Third-party lab testing: 8 independent Janoshik assays on file, covering 8 substances, median measured purity 99.1%, most recent test 2025-11-20.
Finnrick, an independent testing programme, publishes 4 assays for Mei Peptide: 2 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 2 did not. Most recent assay 13 Jul 2026.
Mei Peptide listed by Finnrick as "Trading". Source: Finnrick, https://www.finnrick.com/vendors/mei-peptide.
Mei Peptide is listed as active.
| Substance | Measured purity | Test date |
|---|---|---|
| Sermorelin | 99.01% | 2025-11-19 |
| Cjc-1295 With DAC 5 | 98.28% | 2025-11-19 |
| Tirzepatide 30mg | 99.78% | 2025-07-22 |
| Tesamorelin 10mg | 99.08% | 2025-07-19 |
| Retatrutide 10mg | 99.66% | 2025-07-19 |
| KLOW (ghk Or Ghk-cu/ Tb-500/ Bpc-157/ Kpv) | not reported | 2025-11-20 |
| Nad+500 | not reported | 2025-07-18 |
| Bpc5mg+tb5mg Blend | not reported | 2025-07-18 |
5 of these 8 assays report a measured purity figure. The other 3 confirm the substance was submitted and tested but carry no purity number on the certificate, which is not the same as a failed result.
| Product | Assays | Result |
|---|---|---|
| Retatrutide | 4 | 2 passed, 2 failed |
Source: Finnrick, as published 2026-08-09. Pass and fail are Finnrick's classification against its own threshold, not ours.
| Status | Active |
|---|---|
| Independent assays on file | 8 |
| Median measured purity | 99.1% |
| Vendor type | Research-use supplier |
These details were read from Mei Peptide's own website on 2026-08-10. Pages consulted:
Mei Peptide is listed as active and we hold 8 independent Janoshik assays on file, median measured purity 99.1%; 4 Finnrick assays (2 passing, 2 failing its purity threshold). That is evidence about the batches that were tested or published, not a guarantee about the vial you receive.
Yes. We hold 8 third-party Janoshik assays for Mei Peptide, covering 8 substances, with a median measured purity of 99.1%. The most recent is dated 2025-11-20. Finnrick, an independent testing programme, publishes 4 assays for Mei Peptide: 2 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 2 did not. Most recent assay 13 Jul 2026.
Tested substances: KLOW (ghk Or Ghk-cu/ Tb-500/ Bpc-157/ Kpv), Sermorelin, Cjc-1295 With DAC 5, Tirzepatide 30mg, Tesamorelin 10mg, Retatrutide 10mg.
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