Retatrutide 98.0% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabE. It reports 98.01% purity for Retatrutide via HPLC and mass quantification. The tested quantity was 9.66mg against a 10mg label, a deviation of -3.4%. Endotoxin status is not applicable, and the test is older (6-12 months).
- no endotoxin test
- older (6-12 months)
- Test date
- 2025-09-30
- Testing lab
- LabE
- Batch / lot
- (no batch ID)
- Quantity
- 9.66mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 5.0
- Label dose
- 10mg
How this result compares
This Retatrutide certificate's tested purity of 98.01% ranks higher than 2% of the 9822 Retatrutide certificates with a purity result we have catalogued (median 99.83%).
Tested 2025-09-30 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 17% of our catalogued Retatrutide certificates.
Zlz Peptide has 274 certificates in our corpus, including 100 for Retatrutide at a median tested purity of 99.84%.
Test report image
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