Retatrutide 99.4% Purity — Royal PeptidesCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabE. The retatrutide batch (June 2 2025) showed 99.38% purity via HPLC and mass quantification. The tested quantity was 9.69mg against a 10mg label, a deviation of -3.1%. Endotoxin status is not applicable, and the test is older (6-12 months).
- older (6-12 months)
- no endotoxin test
- Test date
- 2025-10-21
- Testing lab
- LabE
- Batch / lot
- June 2 2025
- Quantity
- 9.69mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 8.8
- Label dose
- 10mg
How this result compares
This Retatrutide certificate's tested purity of 99.38% ranks higher than 10% of the 9821 Retatrutide certificates with a purity result we have catalogued (median 99.83%).
Tested 2025-10-21 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 21% of our catalogued Retatrutide certificates.
Royal Peptides has 39 certificates in our corpus, including 18 for Retatrutide at a median tested purity of 99.72%.
Test report image
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