Retatrutide 99.8% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabE. The retatrutide batch RT10D showed 99.84% purity via HPLC and a quantity of 9.68mg against a 10mg label (-3.2% deviation). Endotoxin status is not available. The test is older (6-12 months) but a verification URL is available.
- no endotoxin test
- older (6-12 months)
- Test date
- 2025-09-30
- Testing lab
- LabE
- Batch / lot
- RT10D
- Quantity
- 9.68mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 9.8
- Label dose
- 10mg
How this result compares
This Retatrutide certificate's tested purity of 99.84% ranks higher than 52% of the 9823 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
Finnrick
Artifact capturedWe have the certificate image (SHA-256 hash captured) — you can verify it loads from the upstream lab and matches the artifact shown here.
Verify on the upstream labSaved source document
sha256:b99fc670a741e599…
— immutable copy held by TitrateLab