The Facts

• The National Heart Lung and Blood Institute (NHLBI) notes that no single test can accurately detect the presence of CAD. Typically, doctors diagnose the disorder using a combination of testing approaches.
  
  

Electrocardiogram

• Doctors can measure the heart's electrical output with a diagnostic procedure called an electrocardiogram (EKG, ECG), notes the NHLBI and the Mayo Clinic. This technique can reveal inadequate blood flow to the heart or evidence of heart attack.
  
  

Echocardiogram

• Doctors can assess the actions of the heart's walls using a sound wave imaging process called an echocardiogram, notes the Mayo Clinic. Inefficient or weak movement of sections of the walls may indicate the presence of CAD.
  
  

Stress Testing

• Stress testing is another procedure that combines an EKG with physical activity on a treadmill or stationary bike. This method can detect signs of CAD, including shortness of breath, chest pain, changes in heart rate or blood pressure and heart rhythm abnormalities, notes the NHLBI.
  
  

Additional Methods

• Additional diagnostic methods including blood tests, chest X-rays, physical examination and patient history.