A rapid colorimetric method for determining glutathione based on the reaction between cobalt oxyhydroxide nanosheets and 3,3,5,5 Tetramethylbenzidine ScienceDirect Tag Based Pull Down Assay Springer Nature Link Rapid Quantification of Oxidized and Reduced Forms of Glutathione Using Ortho phthalaldehyde in Cultured Mammalian Cells In Vitro Differentiating Changes in Glutathione Levels from Cytotoxic Events Using Multiplexed Assays A validated method to assess glutathione peroxidase enzyme activity Chemical Papers Springer Nature Link