Cardiac Triple Simultaneous testing for Tn-I, CK-MB, and Myoglobin Tn-I, CK-MB, and Myoglobin are secreted in blood after the heart gets injured by cardiac stress for the lack of oxygen. The levels of these biomarkers can reveal the degree of a heart attack or damage. It would test for the level of those biomarkers in the blood to assist clinicians to assess the cardiac health status. Diagnosis diseasesMyocardial Infarction (MI)