Glutathione research distinguishes reduced glutathione (GSH) from glutathione disulfide (GSSG), its oxidized form. These names matter when interpreting analytical results: a measurement of one is not automatically a measurement of the other. [1] [2]
For laboratory and analytical research only. Not for human consumption, medical, diagnostic, therapeutic, or veterinary use.
Identity and research context
Matsumoto and colleagues reported an analytical method for determining GSH and GSSG in biological samples. Their method distinguishes the two through sample preparation and enzymatic measurement. The paper addresses analytical measurement, not the properties of an AlphaGrade product. [1]
A later blood-assay paper also distinguishes GSH, GSSG and their ratio. This illustrates why a report should identify exactly what was measured rather than treating every result labeled “glutathione” as equivalent. [2]
Documentation and lot traceability
Product- or lot-specific documentation may be available depending on the material and lot. Request the current lot’s documentation through Contact. Include the product name and lot identifier, and check that the document identifies the same material and lot.
For glutathione, request confirmation of the supplied chemical form, including whether it is reduced glutathione, glutathione disulfide or a specified salt. The nominal “1,500 mg” listing alone does not resolve the form or independently verify the amount in a particular vial. A report for another brand or lot does not establish the properties of your material.
AlphaGrade listing
BioMod Glutathione 1,500 mg. Check the listing for current commercial details.
Frequently asked questions
Are GSH and GSSG interchangeable names?
No. They distinguish reduced glutathione from its oxidized disulfide form. Keep that distinction when reading methods, specifications and reports. [1] [2]
Does a published assay paper verify this listing?
No. A research method describes how measurements were made in that study. It does not authenticate a supplied lot or establish which chemical form it contains.
References
- Matsumoto S, Teshigawara M, Tsuboi S, Ohmori S (1996). Analytical study distinguishing glutathione and glutathione disulfide. Analytical Sciences. 12:91–95. DOI: 10.2116/analsci.12.91. Publisher abstract.
- Giustarini D et al. (2026). GSH/GSSG assay for blood microvolumes. Antioxidants. 15(4):483. DOI: 10.3390/antiox15040483. Publisher article.
The cited literature describes the compound or its components. It does not test, certify, or establish the suitability of any material supplied by AlphaGrade.
