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What is a "troponin level of 1"?

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A patient with a troponin level greater than 0.01 nanograms per milliliter of blood has an increased risk for cardiac events compared to patients whose troponin levels are undetectable, according to Mayo Medical Laboratories. The troponin test is used to diagnose heart attack and monitor patients with other cardiac injuries.

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In people who have had heart attacks, troponin levels are usually increased after 6 hours, reports MedlinePlus. Pulmonary hypertension, congestive heart failure, inflammation of the heart muscle, cardiomyopathy and trauma to the heart muscle may also cause elevated troponin levels. Some people have elevated troponin levels after open-heart surgery, cardiac angioplasty, radiofrequency ablation of the heart and heart defibrillation.

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