Used for measuring glutathione peroxidase (GSH-PX) enzyme activity in porcine (pig) biological samples such as blood, tissue homogenates, or cell lysates. This ELISA kit enables researchers to quantify the level of GSH-PX, an important antioxidant enzyme that protects cells from oxidative damage by reducing hydrogen peroxide and lipid peroxides. It is commonly applied in studies related to oxidative stress, inflammation, toxicology, and animal health in veterinary and agricultural research. The assay helps evaluate the antioxidant status in pigs, which is useful in nutrition studies, disease monitoring, and assessing the impact of environmental or physiological stressors.