Retatrutide 99.9% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabG. It reports 99.9% purity for Retatrutide via HPLC and mass quantification. However, the tested quantity of 33.2mg significantly deviates from the 20mg label, a 66% overage. Endotoxin status is not applicable, and the test is recent (3-6 months old).
- quantity deviation (66% over)
- no endotoxin test
- Test date
- 2025-11-23
- Testing lab
- LabG
- Batch / lot
- (no batch ID)
- Quantity
- 33.2mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 4.4
- Label dose
- 20mg
How this result compares
This Retatrutide certificate's tested purity of 99.90% ranks higher than 70% of the 9822 Retatrutide certificates with a purity result we have catalogued (median 99.83%).
Tested 2025-11-23 by LabG via HPLC + mass quantification + endotoxins. This test is newer than 28% 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
sha256:383ad6f47be24dbb…
— immutable copy held by TitrateLab