Diagnosis of heart disease is usually carried out by relying on a combination of medical history, physical examination, and tests for heart disease. Many patients often undergo tests only when some symptoms have manifested or after suffering some major cardiovascular event. However, it is a good idea to opt for screening, as this will foretell possible future risk. Here are some of the tests used to diagnose heart disease.

•   Your medical history – This will look at certain symptoms, and family history of heart disease, apart from risk factors and your lifestyle. For instance, you will be probed to check if you smoke, if you are physically inactive, your diet, and stress levels.
•   Physical examination – These look for specific vital signs to check your heart rate, heart murmur and abnormal sounds from lungs. For instance, abnormal sounds from lungs may indicate heart issues. Examination also looks for signs of poor circulation, like swelling in the legs. 
•   Tests – These include blood tests mentioned above, and Electrocardiogram to identify arrhythmias, and previous heart attacks. 
•   Imaging – These tests such as Echocardiogram, Chest X-Ray, CT scan and Heart MRI are used to visualize the heart, functions and abnormalities. 
•   Stress tests – These help to assess your heart’s response to physical exertion. 

In addition to the above, you are also likely to undergo other tests such as Coronary Angiography, Nuclear Cardiology tests, Lipid Panel etc. All of these tests help in correctly assessing your present risk of heart disk. This will also indicate if you need lifestyle changes, dietary modifications and medications to reduce your risk.