text_1: High-sensitivity cardiac troponin T (HSCT-T) dosage may not be diagnostic if the onset of symptoms occurs less than 3 hours before acute myocardial injury (AMI).
text_2: At 3-5 ng/L (six papers), the summary sensitivity was 97.4% (94.9% to 98.7%) and the summary specificity was 42.4% (31.2% to 54.5%).