Used in biomedical research to detect and quantify atrial natriuretic factor (ANF) levels in human heart tissue samples. Helps assess cardiac function and stress in experimental studies. Commonly applied in studies related to heart failure, hypertension, and myocardial remodeling. Enables researchers to monitor changes in ANF concentration under various physiological and pathological conditions. Suitable for in vitro research use only, not for diagnostic or therapeutic procedures.