Retatrutide 99.9% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabE. The retatrutide batch (Clear cap, gold top) showed 99.9% purity via HPLC and mass quantification. Quantity was 3% over the label (41.2mg tested vs 40mg label). Endotoxin status is not applicable, and the test is recent (under 3 months).
- no endotoxin test
- Test date
- 2026-02-22
- Testing lab
- LabE
- Batch / lot
- Clear cap, gold top
- Quantity
- 41.2mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 10.0
- Label dose
- 40mg
How this result compares
This Retatrutide certificate's tested purity of 99.90% ranks higher than 70% of the 9823 Retatrutide certificates with a purity result we have catalogued (median 99.83%).
Tested 2026-02-22 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 55% 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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