All Glutathione Certificate of Analysis results— 401 COAs
TitrateLab · Certificate of Analysis

Glutathione 99.8% Purity — Zenith BiopeptidesCertificate of Analysis · Independent third-party lab result

Tested purity 99.8% High purity · 99.781%
Dose vs label +7.3% Over the labeled dose
Evidence Source archived
Test date
2026-01-11
Testing lab
Freedom Diagnostics
Batch / lot
GTT-1500-1128
Quantity
1609.58 mg
label 1500mg · tested 1609.58 mg
Endotoxins
Assay method
HPLC + MS
Label dose
1500mg
Context

How this result compares

This Glutathione certificate's tested purity of 99.78% ranks higher than 56% of the 401 Glutathione certificates with a purity result we have catalogued (median 99.74%).

Tested 2026-01-11 by Freedom Diagnostics via HPLC + MS. This test is newer than 29% of our catalogued Glutathione certificates.

Zenith Biopeptides has 98 certificates in our corpus, including 1 for Glutathione at a median tested purity of 99.78%.

Manufacturer
Zenith Biopeptides
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
1500mg
Catalogued
2026-07-04
Saved source

Saved source document

sha256:b9c5a703e357a66d… — immutable copy held by TitrateLab

Download the saved PDF (sha256 b9c5a703e357…)
Related

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