Increased circulating lactate dehydrogenase may indicate that a myocardial infarction has occurred within the past week.

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Lactate dehydrogenase (LDH) is an enzyme that is released into the bloodstream when cells are damaged or destroyed. LDH levels can be used as a marker for various forms of tissue damage, including myocardial infarction. Elevated levels of LDH typically occur within the first 24 to 48 hours after a myocardial infarction and can remain elevated for up to a week, making it a useful tool for diagnosing recent heart damage.

Increased Circulating Lactate Dehydrogenase May Indicate That a Myocardial Infarction