Used in biomedical research to quantify levels of apolipoprotein A1 in human serum or plasma samples. Helps assess cardiovascular health and study high-density lipoprotein (HDL) function. Widely applied in clinical laboratories and research settings to investigate metabolic disorders, atherosclerosis, and risk factors for heart disease. Enables consistent and sensitive detection of apo-A1, supporting studies on lipid metabolism and therapeutic interventions.