Used for the quantitative measurement of endogenous Rat EL activity in biological samples such as serum, plasma, and cell culture supernatants. This ELISA kit enables researchers to assess EL (Endothelial Lipase) activity levels in rat models, which is crucial for studies related to lipid metabolism, atherosclerosis, and cardiovascular diseases. The assay provides a reliable and sensitive method to monitor changes in EL activity under experimental conditions, supporting preclinical research in metabolic and vascular biology.