What does the Doctor do
The doctor can run many different tests to check for Congestive Heart Failure. Those tests include: Blood work - Specifically a BNP - this tests for the amount of fluids in the body (even fluids that are not noticeable such as around the heart/lungs etc. Chest xray - this too can also show congestive heart failure Echocardiogram - this is an ultrasound of your heart. This is able to give a 2D version of the heart for your doctor (typically a cardiologist) to determine the amount of heart failure you have. It also helps the doctor to determine if there has been any damage to your hearts ventricles, valves, muscles etc.