Retatrutide 99.8% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
LabG tested this retatrutide batch ('Silver cap (grey dot)') at 99.8% purity via HPLC. The tested quantity of 16.4mg showed a 9.3% deviation from the 15mg label, and endotoxin status is not applicable. The test is recent (under 3 months old). Customers can cross-check on the lab's public verification URL.
- high quantity deviation
- no endotoxin test
- Test date
- 2026-03-04
- Testing lab
- LabG
- Batch / lot
- Silver cap (grey dot)
- Quantity
- 16.4mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 8.4
- Label dose
- 15mg
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 2026-03-04 by LabG via HPLC + mass quantification + endotoxins. This test is newer than 58% 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
Finnrick
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