A computed tomography (CT) scan of the arteries leading to the heart. The scan provides images of calcium deposits that can narrow or block the arteries. The higher the cardiac calcium score, the more likely the patient has heart disease or is at increased risk of heart attack.
Ionized calcium is calcium in your blood that is not attached to proteins. It is also called free calcium. Calcium helps build strong bones and teeth. It is important for heart function. It also helps with muscle contraction, nerve signaling, and blood clotting.
The total calcium blood test is used to measure the total amount of calcium in your blood. Calcium is one of the most important minerals in your body. Most of your body’s calcium is stored in your bones.