Coronary Artery Calcium Score

The Coronary Artery Calcium (CAC) Score, measured using the Agatston method from a cardiac CT scan, quantifies calcified plaque in the coronary arteries. A score of zero indicates no detectable calcified plaque. Higher scores correlate with a greater burden of coronary atherosclerosis and increased cardiovascular event risk. It is a one-time or periodic imaging-based marker, not a blood test.