Glutathione: 1,135 published COA source records
1 study on Glutathione curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.
Bottom line: TitrateLab indexes 1,135 published Glutathione COA source records from third-party laboratories, covering 456 publicly attributable vendor identities. Across 1,042 records with positive numeric purity, the arithmetic mean is 99.6%. 0 records report zero purity; these remain in the record count and are excluded from the positive-purity mean. 1 positive purity results are below 90%; 31 records report measured amount more than 10% below the label. The latest recorded test date is 2026-11-09. TitrateLab did not perform these laboratory tests. Source records are not unique batches, and vendor identity does not establish manufacturing role, product safety or overall quality.
Glutathione: published third-party laboratory evidence
All published source records, including absent and zero purity. Matching uses a case-insensitive exact peptide token. No deduplication in the headline; vendor rankings deduplicate eligible certificates separately. The COA archive can use normalized compound names and a different measurement or duplicate policy; totals from these populations need not match.
Latest recorded test: 2026-11-09. Aggregate calculated: 2026-11-13T13:17:19.458385+00:00. Calculation time is not a laboratory observation date.
Within that total, 429 source records have unresolved vendor identity. They remain in corpus-level lab evidence and are excluded from named-vendor rankings.
Top 3 vendor evidence profiles for Glutathione
Eligible vendors have at least 2 deduplicated certificates and 2 classifiable identity observations. Rank uses the 95% lower confidence bound on clean identity results; mean positive purity and certificate count break ties. Missing measurements are not passes. Exact-zero/not-detected and explicit wrong-compound markers count once per adverse certificate. This describes submitted-sample evidence, not every product or shipment, and is not an endorsement.
| Rank | Vendor | Deduplicated certificates | Avg positive purity | Identity adverse results | |
|---|---|---|---|---|---|
| #1 | 11 | 99.73% | 0 of 9 (0.0%) 0 0% / not detected · 0 wrong compound · 2 unclassified | Reveal with Pro → | |
| #2 | 8 | 99.67% | 0 of 8 (0.0%) 0 0% / not detected · 0 wrong compound | Reveal with Pro → | |
| #3 | 7 | 99.85% | 0 of 6 (0.0%) 0 0% / not detected · 0 wrong compound · 1 unclassified | Reveal with Pro → |
Vendor identities are included with Pro. Record counts and lab measurements remain visible.
Recent source records: #126852 (99.84%) · #126483 (99.34%) · #126402 (96.17%) · #125975 (99.14%) · #125862 (99.75%) · #124960 (99.74%)
Glutathione studies and clinical research
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GHK-Cu and GSH-Cu Both Permeate Stratum Corneum Lipid Membrane Models In Vitro
**Confirming that GHK-Cu permeates a validated stratum corneum lipid model** provides mechanistic support for the inclusion of copper-peptide complexes in topical cosmetic and pharmaceutical products, moving beyond em…
Research tools
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