All Tirzepatide Certificate of Analysis results(8,143 COAs)
TitrateLab · Certificate of Analysis
Tested vendor:Zhejiang Jiuzhou Chem Co All Tirzepatide COAs & research All Tirzepatide results & stats

Tirzepatide 99.8% Purity — Zhejiang Jiuzhou Chem CoCertificate of Analysis · Independent third-party lab result

Tested purity 99.8% High purity · 99.79%
Dose vs label -1.3% Essentially at label
Evidence Source archived
Test date
2026-02-26
Testing lab
LabE
Batch / lot
(no batch ID)
Quantity
14.8mg
label 15mg · tested 14.8mg
Endotoxins
—
Assay method
HPLC + mass quantification + endotoxins
Test score
7.7
Label dose
15mg
Context

How this result compares

This Tirzepatide certificate's tested purity of 99.79% ranks higher than 38% of the 8140 Tirzepatide certificates with a purity result we have catalogued (median 99.83%).

Tested 2026-02-26 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 62% of our catalogued Tirzepatide certificates.

Zhejiang Jiuzhou Chem Co has 4 certificates in our corpus, including 4 for Tirzepatide at a median tested purity of 99.85%.

Manufacturer
Zhejiang Jiuzhou Chem Co
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Source

Finnrick

Source archived

We archived this certificate's source document — an immutable, SHA-256-fingerprinted copy held by TitrateLab (see Saved source document below). It stays verifiable even if the upstream page disappears.

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Method
HPLC + mass quantification + endotoxins
Test type
finnrick_composite
Dose
15mg
Container
(no data)
Catalogued
2026-06-21
Saved source

Saved source document

sha256:60b53bab8b408f0e… — immutable copy held by TitrateLab

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