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

Glutathione 99.8% Purity — Midway GrayCertificate of Analysis · Independent third-party lab result

Tested purity 99.8% High purity · 99.829%
Dose vs label -0.7% Essentially at label
Evidence Source archived
Test date
2025-10-16
Testing lab
Freedom Diagnostics
Batch / lot
Quantity
1488.89 mg
label 1500mg · tested 1488.89 mg
Endotoxins
Assay method
HPLC + MS
Label dose
1500mg
Context

How this result compares

This Glutathione certificate's tested purity of 99.83% ranks higher than 64% of the 401 Glutathione certificates with a purity result we have catalogued (median 99.74%).

Tested 2025-10-16 by Freedom Diagnostics via HPLC + MS. This test is newer than 10% of our catalogued Glutathione certificates.

Midway Gray has 38 certificates in our corpus, including 2 for Glutathione at a median tested purity of 99.90%.

Manufacturer
Midway Gray
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:bffe22d5965347fe… — immutable copy held by TitrateLab

Download the saved PDF (sha256 bffe22d59653…)
Related

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