ECG and echocardiogram are important diagnostic tests to assess heart health. ECG records the heart's electrical activity, while an echocardiogram uses sound waves to create heart images. Both tests are safe, noninvasive, and can help diagnose various heart conditions. If you're experiencing symptoms or have a family history of heart disease, talk to your doctor about whether these tests are necessary. Early detection and treatment of heart conditions can prevent complications and improve quality of life.