Used in biomedical research to quantify levels of apolipoprotein A-II in human plasma or serum samples. Helps assess high-density lipoprotein (HDL) function and metabolism. Applied in studies related to cardiovascular diseases, metabolic disorders, and atherosclerosis. Enables researchers to investigate the role of apoA-II in lipid regulation and its potential as a biomarker for disease risk or progression. Suitable for use in clinical laboratories and research settings where accurate, sensitive measurement of apoA-II is required.