All Retatrutide Certificate of Analysis results— 9703 COAs
TitrateLab · Certificate of Analysis

Retatrutide 99.9% Purity — Great Northern PeptidesCertificate of Analysis · Independent third-party lab result

Tested purity 99.9% High purity · 99.863%
Dose vs label +16.6% Over the labeled dose
Evidence Source archived
Test date
2026-02-22
Testing lab
Freedom Diagnostics
Batch / lot
GNP-RT40-002
Quantity
46.66 mg
label 40mg · tested 46.66 mg
Endotoxins
Assay method
HPLC + MS
Label dose
40mg
Context

How this result compares

This Retatrutide certificate's tested purity of 99.86% ranks higher than 57% of the 9698 Retatrutide certificates with a purity result we have catalogued (median 99.83%).

Tested 2026-02-22 by Freedom Diagnostics via HPLC + MS. This test is newer than 55% of our catalogued Retatrutide certificates.

Great Northern Peptides has 83 certificates in our corpus, including 7 for Retatrutide at a median tested purity of 99.81%.

Manufacturer
Great Northern Peptides
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
40mg
Catalogued
2026-07-04
Saved source

Saved source document

sha256:4272b4349e533f6c… — immutable copy held by TitrateLab

Download the saved PDF (sha256 4272b4349e53…)
Related

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