All Tirzepatide Certificate of Analysis results— 7306 COAs
TitrateLab · Certificate of Analysis

Tirzepatide 99.8% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result

Tested purity 99.8% High purity · 99.81%
Dose vs label +13.7% Over the labeled dose
Evidence Source archived
Test date
2026-05-31
Testing lab
Freedom Diagnostics
Batch / lot
318272019
Quantity
34.11 mg
label 30mg · tested 34.11 mg
Endotoxins
Assay method
HPLC + MS
Label dose
30mg
Context

How this result compares

This Tirzepatide certificate's tested purity of 99.81% ranks higher than 47% of the 7304 Tirzepatide certificates with a purity result we have catalogued (median 99.82%).

Tested 2026-05-31 by Freedom Diagnostics via HPLC + MS. This test is newer than 88% of our catalogued Tirzepatide certificates.

Zlz Peptide has 269 certificates in our corpus, including 94 for Tirzepatide at a median tested purity of 99.80%.

Manufacturer
Zlz Peptide
View vendor profile
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
30mg
Catalogued
2026-07-04
Saved source

Saved source document

sha256:f3deb46feb844212… — immutable copy held by TitrateLab

Download the saved PDF (sha256 f3deb46feb84…)
Related

Other Tirzepatide certificates

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 →