Test characteristics for troponin T and I for detecting acute myocardial infarction*
| Test and cut point for abnormal levels | Time in hours from onset of symptoms | Sensitivity | Specificity | +LR | −LR |
|---|---|---|---|---|---|
| *LRs defined in glossary. | |||||
| Troponin T >0.1 ng/ml | 1 | 47% | 87% | 3.7 | 0.6 |
| 6 | 74% | 83% | 4.4 | 0.3 | |
| 8 | 84% | 81% | 4.5 | 0.2 | |
| Troponin T >0.2 ng/ml | 1 | 14% | 87% | 1.1 | 1.0 |
| 6 | 86% | 83% | 5.1 | 0.2 | |
| 8 | 96% | 81% | 5.2 | 0.05 | |
| Troponin I >0.1 ng/ml (based on only 1 study) | 1 | 13% | 95% | 2.7 | 0.9 |
| 4 | 67% | 95% | 13 | 0.3 | |
| 6 | 90% | 95% | 18 | 0.1 | |