GSSG is widely used in biochemical research to study oxidative stress and redox balance in cells. It serves as a key marker for evaluating the cellular response to oxidative damage, helping researchers understand conditions like aging, neurodegenerative diseases, and cancer. In pharmaceuticals, GSSG is utilized in the development of antioxidants and therapies aimed at mitigating oxidative stress-related disorders. Additionally, it plays a role in enzymatic assays and as a substrate in studies involving glutathione metabolism, providing insights into detoxification processes and cellular defense mechanisms.