Tirzepatide 99.7% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabE. The tirzepatide was found to be 99.66% pure via HPLC and mass quantification. The tested quantity of 49.7mg was within 1% of the 50mg label. 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
- no batch ID
- Test date
- 2025-11-18
- Testing lab
- LabE
- Batch / lot
- (no batch ID)
- Quantity
- 49.7mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 7.4
- Label dose
- 50mg
How this result compares
This Tirzepatide certificate's tested purity of 99.66% ranks higher than 22% of the 7378 Tirzepatide certificates with a purity result we have catalogued (median 99.82%).
Tested 2025-11-18 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 40% of our catalogued Tirzepatide certificates.
Zlz Peptide has 274 certificates in our corpus, including 94 for Tirzepatide at a median tested purity of 99.80%.
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:c52cdd41221a295a…
— immutable copy held by TitrateLab