The Troponin T Quantitative test measures the levels of troponin T, a protein released when heart muscle is damaged, typically to diagnose myocardial infarction and assess heart damage. A blood sample is collected and analyzed, with elevated levels indicating potential heart injury. Normal ranges usually fall below 14 ng/L, but results can vary based on the laboratory. Elevated troponin T may also occur in non-cardiac conditions, necessitating further evaluation and follow-up based on results.