Cardiac marker
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Cardiac markers are biomarkers measured to evaluate heart function. They can be useful in the early prediction or diagnosis of disease.[1] Although they are often discussed in the context of myocardial infarction, other conditions can lead to an elevation in cardiac marker level.[2][3]
Most of the early markers identified were enzymes, and as a result, the term "cardiac enzymes" is sometimes used. However, not all of the markers currently used are enzymes. For example, in formal usage, troponin would not be listed as a cardiac enzyme.[4]