Plasma Markers of Myocardial Necrosis
| Marker | Rises after: | Peaks at: | Returns to normal: |
|---|---|---|---|
| Myoglobin | 1–4h | 6–7h | 24h |
| Troponin T* (high-sensitivity assay) | 1h | 3–4h | 10–14 days (3–4 after unstable angina) |
| Troponin I or T | 3–12h | 24h | 5–10 days |
| (standard assay) | |||
Myocardial B-fraction of creatine kinase (CK-MB) | 4–8h | 12–20h | 2–3 days |
* See Table 46.3 for causes of raised plasma troponin other than acute coronary syndrome.