▎ 摘　　要

NOVELTY - Electrochemical immunosensor for detection of cardiac biomarker troponin I, comprises circular carbon electrode graphite with modified surface with reduced graphene oxide nanocomposite and polytyramine, followed by immobilization by physical adsorption of the anti-troponin I antibody probe on its surface. USE - The electrochemical immunosensor is useful for detection of cardiac biomarker troponin I. ADVANTAGE - The electrochemical immunosensor and the cardiac biomarker troponin I can develop more sensitive, simple and quick analytical methods for diagnosing cardiac injuries.