The normal range for Ultrasensitive Troponin is 0 to 0.04ng/ml, with variability in kits and procedures resulting in inconsistent reference ranges, but overall <0.04ng/ml. Troponin is a physiologic component unique to cardiac myocytes. When cardiac myocytes are functioning normally, Troponin is not detected in venous blood, and if it is present, it is present in extremely small amounts. If cardiomyocyte damage occurs, the cardiomyocyte-specific component enters the bloodstream, causing its value to rise. The most common cause of myocardial damage is acute myocardial infarction. Due to the acute ischemia and hypoxia of the cardiomyocytes, the blood oxygen supply is not restored in time within a short period of time leading to the destruction of large areas of cardiomyocytes, causing an elevation of troponin, which can be elevated 2-4 hours after the onset of the disease, and the value of which is usually greater than 0.04ng/ml. Ultrasensitive Troponin is more accurate than normal Troponin, and the range of values is more precise, and can detect values in the range of 0.04ng/ml and below.