Used in biomedical research to quantify β1-adrenergic receptor levels in tissue or cell samples, particularly in studies related to cardiac function and regulation of the sympathetic nervous system. Enables researchers to measure receptor expression changes under various physiological or pathological conditions such as heart failure, hypertension, or after drug treatment. The kit supports investigation into receptor dynamics, including downregulation or upregulation, aiding in drug development and understanding of adrenergic signaling pathways. Commonly applied in preclinical studies using rat models to evaluate cardiovascular therapeutics and neurohormonal responses.