Used in biomedical research to quantify Protein Kinase A catalytic subunit levels in rat samples, this ELISA kit enables accurate measurement of PKAcs in tissues or biological fluids. It is widely applied in studies related to cellular signaling pathways, especially those involving cyclic AMP (cAMP) regulation. Researchers use it to investigate metabolic disorders, cardiac function, neuronal activity, and hormone responses. The kit supports high-throughput analysis and provides a reliable tool for assessing PKA activity in experimental models of disease or drug intervention.