Properties of cardiac marker proteins
| Protein | Molecular mass (kD) | First detection* | Duration of detection | Sensitivity | Specificity |
|---|---|---|---|---|---|
| *Hours after symptom onset. CK, creatine kinase; LDH, lactate dehydrogenase. | |||||
| Fatty acid binding protein | 12 | 1.5–2 hours | 8–12 hours | +++ | ++ |
| Myoglobin | 16 | 1.5–2 hours | 8–12 hours | +++ | + |
| CK-MB | 83 | 2–3 hours | 1–2 days | +++ | +++ |
| Troponin I | 33 | 3–4 hours | 7–10 days | ++++ | ++++ |
| Troponin T | 38 | 3–4 hours | 7–14 days | ++++ | ++++ |
| CK | 96 | 4–6 hours | 2–3 days | ++ | ++ |
| Aspartate transaminase | ~103 | 6–10 hours | 3–5 days | ++ | + |
| LDH | 135 | 6–10 hours | 5–7 days | ++ | + |