Retatrutide 99.6% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabE. The retatrutide batch (TZ30202601) showed 99.57% purity via HPLC and mass quantification. Quantity was slightly over at 30.9mg for a 30mg label (3% deviation). Endotoxin status is not applicable for this test type. The test is recent (3-6 months old) and customers can verify on the lab's public URL.
- no endotoxin test
- Test date
- 2026-01-29
- Testing lab
- LabE
- Batch / lot
- TZ30202601
- Quantity
- 30.9mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 9.2
- Label dose
- 30mg
How this result compares
This Retatrutide certificate's tested purity of 99.57% ranks higher than 18% of the 9823 Retatrutide certificates with a purity result we have catalogued (median 99.83%).
Tested 2026-01-29 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 45% 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:d4ee98f1d43cef52…
— immutable copy held by TitrateLab