Used to measure glutathione reductase (GSR) activity in rat biological samples such as blood, tissue homogenates, or cell lysates. This ELISA kit enables researchers to quantify GSR levels accurately in studies related to oxidative stress, antioxidant defense mechanisms, and cellular redox status in rat models. Commonly applied in toxicology, pharmacology, and biomedical research to assess the impact of drugs, environmental stressors, or disease conditions like liver injury, neurodegenerative disorders, and inflammation. The assay supports high-throughput analysis with high specificity and sensitivity, making it suitable for both academic and industrial laboratory settings.