Variable Cutoff Sensitivity% Specificity% NPV% PPV% Area Copeptin 30.7 93.9 94.1 88.9 96.9 0.98 CTn-I 0.87 72.7 82.4 60.9 88.9 0.81 CK-MB 32 66.7 70.6 52.2 81.5 0.77

Table 7: The cutoff, sensitivity, specificity, NPV, PPV and area under ROC curve of copeptin, cTn-I and CK-MB at admission time.