Question: what are the tests for heart?
Answer: Electrocardiogram (ECG). An ECG records these electrical signals and can help your doctor detect irregularities in your heart's rhythm and structure. ... 
Holter monitoring. ... 
Echocardiogram. ... 
Stress test. ... 
Cardiac catheterization. ... 
Cardiac computerized tomography (CT) scan. ... 
Cardiac magnetic resonance imaging (MRI).