Retatrutide 99.3% Purity — Reta PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabE. The retatrutide batch (Feb 1, 2026) showed 99.3% purity via HPLC. However, the tested quantity was 8.22mg against a 10mg label, a significant -17.8% deviation. Endotoxins were below LOQ, and the test is recent (under 3 months).
- quantity deviation (-17.8%)
- Test date
- 2026-04-28
- Testing lab
- LabE
- Batch / lot
- Feb 1, 2026
- Quantity
- 8.22mg
- Endotoxins
- below LOQ
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 5.9
- Label dose
- 10mg
How this result compares
This Retatrutide certificate's tested purity of 99.30% ranks higher than 9% of the 9821 Retatrutide certificates with a purity result we have catalogued (median 99.83%).
Tested 2026-04-28 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 70% of our catalogued Retatrutide certificates.
Reta Peptide has 249 certificates in our corpus, including 80 for Retatrutide at a median tested purity of 99.87%.
Test report image
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