Tirzepatide 98.9% 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 98.9% pure via HPLC, with quantity matching the label within 1%. Endotoxin status is not applicable for this test type. The test is recent (under 3 months old) and customers can verify it on the lab's public URL.
- no endotoxin test
- no batch ID
- Test date
- 2026-03-10
- Testing lab
- LabE
- Batch / lot
- (no batch ID)
- Quantity
- 30.3mg
- Endotoxins
- —
- Assay method
- HPLC + mass quantification + endotoxins
- Test score
- 5.9
- Label dose
- 30mg
How this result compares
This Tirzepatide certificate's tested purity of 98.90% ranks higher than 4% of the 7378 Tirzepatide certificates with a purity result we have catalogued (median 99.82%).
Tested 2026-03-10 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 71% 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
sha256:3dc8e68916113aeb…
— immutable copy held by TitrateLab