What is troponin and when is it found in serum?

Updated: May 07, 2019
  • Author: A Maziar Zafari, MD, PhD, FACC, FAHA; Chief Editor: Eric H Yang, MD  more...
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Troponin is a contractile protein that normally is not found in serum. It is released only when myocardial necrosis occurs. Of the three troponin subunits, two (troponin I and troponin T) are derived from the myocardium.

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