Initially, a doctor may suspect atherosclerosis based on findings during a routine physical, such as a weak pulse or hearing a telltale “whooshing” sound in an artery when listening through a stethoscope. After that, the doctor will order various diagnostic tests to confirm atherosclerosis, such as blood tests, an ankle-brachial index test, doppler ultrasound, electrocardiogram, a stress test, or a cardiac catheterization and angiogram.

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