Introduction Chest pain can arise from many causes—ranging from muscle strain or acid reflux to life-threatening conditions like a heart attack. Because the symptoms often overlap, doctors rely on a combination of diagnostic tests to identify whether the pain is cardiac in origin. Four of the most important tools used in evaluating chest pain are the Electrocardiogram (EKG), Troponin blood test, Stress test, and Coronary angiography. Electrocardiogram (EKG/ECG) What it is An EKG records the electrical activity of the heart through small sensors (electrodes) attached to the skin. Why it done What to expect Troponin Blood Test What it is…