A troponin test measures the level of troponin in your blood. Troponin is a type of protein

found in the muscles of your heart. Troponin isn't normally found in the blood. When heart

muscles become damaged, troponin is sent into the bloodstream. As heart damage increases,

greater amounts of troponin are released in the blood.High levels of troponin in the blood

may mean you are having or recently had a heart attack. A heart attack happens when blood

flow to the heart gets blocked. This blockage can be deadly. But quick diagnosis and

treatment can save your life.