Cardiac enzymes can be used to screen for heart disease, but they do not prove the cause of heart disease. There are many factors causing heart disease, such as coronary atherosclerotic heart disease, angina pectoris, myocarditis, heart valve disease, congenital heart disease, hypertrophic obstructive heart disease, hypertensive heart disease, which all belong to the category of heart disease, but these diseases can not be screened by cardiac enzymes alone. Cardiac enzymes are often elevated in patients with coronary artery disease, unstable angina, and in acute myocarditis during an acute attack. However, for other heart diseases, the specificity is relatively low and the sensitivity is relatively insufficient, so it is not possible to determine heart disease by cardiac enzymes alone.