There is no good evidence that if a person is symptom free that any of the common tests that screen for heart disease are helpful according to the US Preventive Services Task Force (USPSTF). Even for people who smoke or those with diabetes or obesity there's no good evidence that heart screening tests save lives or prevent disease. These tests include EKGs, carotid ultrasounds, echocardiograms, stress tests, and cardiac CT scans. Even cholesterol tests in women when there are no symptoms are of value!
