Retatrutide 99.8% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabG. It reports 99.8% purity for Retatrutide batch 09/09/25 via HPLC. The quantity tested was 20.3mg, a 1.5% deviation from the 20mg label. Endotoxin status is not applicable for this test. The test is older (6-12 months).
- no endotoxin test
- older (6-12 months)
- Test date
- 2025-10-13
- Testing lab
- LabG
- Batch / lot
- 09/09/25
- Quantity
- 20.3mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 9.8
- Label dose
- 20mg
How this result compares
This Retatrutide certificate's tested purity of 99.80% ranks higher than 43% of the 9821 Retatrutide certificates with a purity result we have catalogued (median 99.83%).
Tested 2025-10-13 by LabG via HPLC + mass quantification + endotoxins. This test is newer than 20% 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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