How long are troponin serum levels elevated in myocardial infarction (MI, heart attack), and what is the role of troponin testing in chest pain?

Updated: May 07, 2019
  • Author: A Maziar Zafari, MD, PhD, FACC, FAHA; Chief Editor: Eric H Yang, MD  more...
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Answer

Serum levels increase within 3-12 hours from the onset of chest pain, peak at 24-48 hours, and return to baseline over 5-14 days.

Measurement of troponin levels for patients with chest pain in the emergency setting has been studied extensively. Baseline measurement of troponin levels followed by serial measurements of troponin 3 hours afterward should be performed; both the absolute value of the troponin level as well as the degree of change in the troponin level should be considered. This has been associated with better performance in an accurate diagnosis of acute MI. [57, 58, 59]

For more information, see Cardiac Markers.


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