A 10-year-old child is being medically evaluated for a learning disability. However, with the presenting symptoms, the health care provider wants to rule out absence seizures. What diagnostic test...

A 10-year-old child is being medically evaluated for a learning disability. However, with the presenting symptoms, the health care provider wants to rule out absence seizures. What diagnostic test would the nurse expect to be performed before initiating any drug therapy?

1. Blood glucose

2. Echocardiogram

3. Electroencephalogram

4. Computed tomography (CT) scan