Troponin I is the only troponin isotope present in the myocardium and is not expressed during any developmental stage in skeletal muscle. Troponin I is released into the bloodstream within hours of the onset of symptoms of myocardial infarction or ischemic damage. It can be detected at 3 to 6 hours following onset of chest pain, with peak concentrations at 12 to 16 hours, and remains elevated for 5 to 9 days. A troponin value above the upper reference limit (99th percentile) value is not always indicative of myocardial infarction. Other conditions resulting in myocardial cell damage can contribute to elevated cardiac troponin I levels. These conditions include, but are not limited to, myocarditis, cardiac surgery, angina, unstable angina, congestive heart failure, and noncardiac-related causes, such as, renal failure and pulmonary embolism.
No specific preparation required
Download the free health test app from Dr. B. Lal Clinical Laboratory. Find all the healthcare information and needs you require in just one place. You can schedule home collection, see reports, save medical history, search for more than 1800 tests, and more with just one app. Available both on iOS and Android. Simplify healthcare, download the Dr. B. Lal Clinical Lab App.