What is Glutathione?
Glutathione (GSH) is a tripeptide consisting of glutamate, cysteine, and glycine. It functions as a major intracellular antioxidant and redox buffer in diverse biochemical pathways. Research-grade materials are available from multiple suppliers with certificates of analysis documenting batch identity and purity.
Laboratories sourcing glutathione for experimental use should match supplier documentation to institutional assay protocols and verify reduced vs oxidized forms as appropriate.
Research areas & preclinical findings
Cellular redox biology
Glutathione participates in thiol-disulfide exchange reactions and serves as a cofactor for glutathione peroxidases and transferases—assay endpoints depend on cell type and oxidative stress model.
Xenobiotic metabolism research
Glutathione conjugation pathways facilitate detoxification of electrophilic compounds—literature examines phase II metabolism across species and tissue contexts.
Antioxidant assay frameworks
In vitro and cellular antioxidant assays quantify glutathione levels as biomarkers of oxidative stress—standardization across laboratories varies.
Published research (selection)
| Study | Journal | Year | DOI | Finding (summary) |
|---|
Important Disclaimer
All products and information on this page are intended strictly for laboratory and scientific research use only. Not for human consumption. These statements have not been evaluated by the FDA.
Quality & documentation
Certificates of analysis should confirm molecular identity and specify reduced (GSH) vs oxidized (GSSG) form, plus purity data acceptable to your QA standards.
Storage & reconstitution (laboratory protocol)
- Store powder sealed with desiccant to prevent oxidation.
- Maintain at recommended temperature per vendor insert (often 2–8 °C or −20 °C).
- Prepare stock solutions fresh when possible; document stability testing if storing reconstituted material.
- Aliquot to minimize freeze–thaw cycles.
Use the research peptide stock solution calculator to translate mass and concentration targets into documented laboratory volumes.
Where to source for research
Compare retailer breadth and COA transparency on the vendor matrix; see partner codes for checkout context.
| Vendor | List context | COA signal | Code |
|---|
Disclosure: This page contains affiliate links. We may earn from qualifying purchases. See our full disclosure.
Related research compounds
Reviewed by Dr. Elena Vasquez, Ph.D.· Last reviewed May 2026