Cardiac troponin is a myocardial marker that is elevated to indicate myocardial injury and decreased to indicate possible dystrophy. Normal reference ranges for troponin are high-sensitivity troponin T<0.014 micrograms per liter and high-sensitivity troponin I<0.034 micrograms per liter. Elevated cardiac troponin values suggest the presence of myocardial injury or other diseases that cause myocardial injury, such as acute myocardial infarction, congestive heart failure, pericarditis, pulmonary hypertension, pulmonary embolism, viral myocarditis, and other diseases. Cardiac troponin can also be high after strenuous exercise. A low level of Troponin suggests possible malnutrition and should be accompanied by increased nutrition and rest. If symptoms such as severe pain in the anterior chest area and shortness of breath occur, it is recommended to go to the hospital immediately.