All Tirzepatide Certificate of Analysis results— 7380 COAs
TitrateLab · Certificate of Analysis

Tirzepatide 100.0% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result

Tested purity 100.0% High purity · 99.95%
Dose vs label -0.7% Essentially at label
Evidence Artifact captured Trust: medium
AI summary Third-party lab

LabE tested this tirzepatide at 99.95% purity using HPLC and mass quantification. The quantity was within 1% of the label (14.9mg tested vs 15mg label). Endotoxin status is not applicable for this test type. The test is older (6-12 months) and no batch ID was provided. Customers can cross-check on the lab's public verification URL.

Watch out for
  • older (6-12 months)
  • no batch ID
  • no endotoxin test
Test date
2025-10-03
Testing lab
LabE
Batch / lot
(no batch ID)
Quantity
14.9mg
label 15mg · tested 14.9mg
Endotoxins
Assay method
HPLC + mass quantification + endotoxins
Test score
8.0
Label dose
15mg
Context

How this result compares

This Tirzepatide certificate's tested purity of 99.95% ranks higher than 92% of the 7378 Tirzepatide certificates with a purity result we have catalogued (median 99.82%).

Tested 2025-10-03 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 31% 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%.

Manufacturer
Zlz Peptide
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Certificate

Test report image

Certificate scan
Certificate scan as published.
Source

Finnrick

Artifact captured

We have the certificate image (SHA-256 hash captured) — you can verify it loads from the upstream lab and matches the artifact shown here.

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Method
HPLC + mass quantification + endotoxins
Test type
finnrick_composite
Dose
15mg
Container
No Label / Silver Crimp / Blue Cap
Catalogued
2026-04-16
Artifact hash
4fbc11ead6394d3f…
Saved source

Saved source document

sha256:261f980d00b51b52… — immutable copy held by TitrateLab

Related

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All Tirzepatide results & stats
This certificate is part of TitrateLab's community-trust corpus. See more from Zlz Peptide or learn how trust scores are computed on the methodology page. New to lab reports? How to read a COA →