Used in biomedical research to measure levels of apolipoprotein A-I in human serum or plasma samples. Widely applied in studies related to cardiovascular health, as Apo-A is a major protein component of high-density lipoprotein (HDL) and serves as a biomarker for assessing the risk of atherosclerosis and coronary artery disease. The ELISA kit enables quantitative detection, supporting clinical diagnostics, drug development, and metabolic research. Commonly used in laboratories for high-throughput screening and longitudinal studies on lipid metabolism.