Used in research settings to measure glutathione peroxidase (GSH-PX) enzyme levels in rat biological samples such as serum, plasma, tissue homogenates, and cell lysates. This ELISA kit enables the quantitative detection of GSH-PX activity, which is a key antioxidant enzyme involved in protecting cells from oxidative stress. It is widely applied in studies related to oxidative damage, inflammation, toxicology, and diseases such as diabetes, neurodegenerative disorders, and liver injury in rat models. The assay helps researchers evaluate the impact of drugs, environmental factors, or dietary interventions on antioxidant defense mechanisms. Results are typically used to support mechanistic insights in preclinical studies and biomedical research.