Used in biomedical research to measure endothelial lipase (EL) levels in rat samples, particularly in studies related to lipid metabolism and cardiovascular diseases. Helps researchers evaluate the role of EL in atherosclerosis, inflammation, and vascular function. Commonly applied in preclinical studies using rat models to investigate the effects of drugs or genetic modifications on endothelial lipase expression. Provides a reliable and sensitive method for quantifying EL protein concentration in tissue homogenates, plasma, and cell culture supernatants.