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

Tirzepatide 99.3% Purity — Zlz PeptideCertificate of Analysis · Independent third-party lab result

Tested purity 99.3% High purity · 99.30%
Dose vs label -1.2% Essentially at label
Evidence Artifact captured Trust: medium
AI summary Third-party lab

LabE tested this tirzepatide at 99.3% purity via HPLC. Quantity was 39.5mg against a 40mg label (-1.3% deviation). Endotoxin status is not applicable for this test type. The test is recent (3-6 months old) and customers can cross-check on the lab's public verification URL.

Watch out for
  • no endotoxin test
  • no batch ID
Test date
2026-01-19
Testing lab
LabE
Batch / lot
(no batch ID)
Quantity
39.5mg
label 40mg · tested 39.5mg
Endotoxins
Assay method
HPLC + mass quantification + endotoxins
Test score
6.6
Label dose
40mg
Context

How this result compares

This Tirzepatide certificate's tested purity of 99.30% ranks higher than 7% of the 7378 Tirzepatide certificates with a purity result we have catalogued (median 99.82%).

Tested 2026-01-19 by LabE via HPLC + mass quantification + endotoxins. This test is newer than 55% 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
40mg
Container
No Label / Silver Crimp / Red Cap
Catalogued
2026-04-16
Artifact hash
635c030d472a977a…
Saved source

Saved source document

sha256:a27834b504541c4a… — immutable copy held by TitrateLab

Related

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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 →