All Tirzepatide Certificate of Analysis results— 7306 COAs
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Tirzepatide 99.5% Purity — Crownwell ResearchCertificate of Analysis · Independent third-party lab result

Tested purity 99.5% High purity · 99.52%
Dose vs label -1.6% Essentially at label
Evidence Source archived
Test date
2026-05-21
Testing lab
Freedom Diagnostics
Batch / lot
CW-TZ40001
Quantity
39.37 mg
label 40mg · tested 39.37 mg
Endotoxins
Assay method
HPLC + MS
Label dose
40mg
Context

How this result compares

This Tirzepatide certificate's tested purity of 99.52% ranks higher than 14% of the 7304 Tirzepatide certificates with a purity result we have catalogued (median 99.82%).

Tested 2026-05-21 by Freedom Diagnostics via HPLC + MS. This test is newer than 86% of our catalogued Tirzepatide certificates.

Crownwell Research has 33 certificates in our corpus, including 4 for Tirzepatide at a median tested purity of 99.83%.

Manufacturer
Crownwell Research
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Source

Freedom Diagnostic

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.

Method
HPLC + MS
Test type
freedom_composite
Dose
40mg
Catalogued
2026-07-04
Saved source

Saved source document

sha256:d0c20dda904f66dd… — immutable copy held by TitrateLab

Download the saved PDF (sha256 d0c20dda904f…)
Related

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