Tirzepatide 99.9% Purity — Northwest PeptidesCertificate of Analysis · Independent third-party lab result

Name: Tirzepatide COA — Northwest Peptides (99.9% purity)
Creator: Freedom Diagnostics
License: https://titratelab.com/terms

Tested purity 99.9% High purity · 99.89%

Dose vs label +4.2% Essentially at label

Evidence Source archived

Test date: 2026-05-28
Testing lab: Freedom Diagnostics
Batch / lot: TR45-20260512
Quantity: 46.87 mg
Endotoxins: —
Assay method: HPLC + MS
Label dose: 45mg

Context

How this result compares

This Tirzepatide certificate's tested purity of 99.89% ranks higher than 67% of the 7304 Tirzepatide certificates with a purity result we have catalogued (median 99.82%).

Tested 2026-05-28 by Freedom Diagnostics via HPLC + MS. This test is newer than 88% of our catalogued Tirzepatide certificates.

Northwest Peptides has 69 certificates in our corpus, including 6 for Tirzepatide at a median tested purity of 99.86%.

Manufacturer

Northwest Peptides

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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.

Tirzepatide 99.9% Purity — Northwest PeptidesCertificate of Analysis · Independent third-party lab result

How this result compares

Freedom Diagnostic

Saved source document

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