This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Marker-specific for Myocardial infarction: 
Select and explain. 
A. Troponin I, B. Troponin C, C. Troponin T, D. LDH
A: Troponin I
Answer: A: Troponin I 
Explanation: The best test for diagnosis of MI is troponin I which can be quantified as a value more than 0.04ng/dl after 3 hours of onset of myocardial infarction.
Remember TROPONIN -I can be false positive in the following cases