Tirzepatide — Peptide PartnersCertificate of Analysis · Independent third-party lab result
This COA was tested by an independent third-party lab, LabB. The report indicates "not detected" for endotoxins and was performed using HPLC + mass quantification + endotoxins methods. Purity and quantity deviation percentages are not specified. The test is older (6-12 months), but customers can cross-check on the lab's public verification URL.
- purity unknown
- quantity unknown
- older (6-12 months)
- Test date
- 2025-09-29
- Testing lab
- LabB
- Batch / lot
- TZ20250730
- Quantity
- n/a
- Endotoxins
- negative
- Assay method
- HPLC + mass quantification + endotoxins
- Label dose
- 40mg
How this result compares
We have catalogued 8047 Tirzepatide certificates; across the 7677 with a purity result the median tested purity is 99.83%.
Tested 2025-09-29 by LabB via HPLC + mass quantification + endotoxins. This test is newer than 29% of our catalogued Tirzepatide certificates.
Peptide Partners has 77 certificates in our corpus, including 7 for Tirzepatide at a median tested purity of 99.74%.
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
sha256:3bc45132740c4e42…
— immutable copy held by TitrateLab