Q:

What are normal troponin levels?

A:

Under normal circumstances, the Mayo Clinic states that troponin levels are very low and undetectable in the blood, usually less than 0.01 nanograms per milliliter. Because the normal value range varies among laboratories, MedlinePlus advises patients to speak with their doctors to interpret the meaning of their troponin results.

According to MedlinePlus, troponins are proteins released into the blood when the heart muscle has been damaged. A doctor usually orders a troponin test to determine if a heart attack has occurred. Other reasons for elevated troponin levels include abnormally fast heart rate, a blood clot in the lung, high blood pressure in the lungs, chest trauma and a weakened heart muscle.

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