Other than EEG is there a test for idiopathic epilepsy?

Observation. "idiopathic" means that the exact cause is unknown...Other than direct observational monitoring, there is no usual test. Some imaging studies such as pet scanning can be helpful in identifying the location or "focus" of the seizures...I would strongly recommend that you talk to your neurologist about this. It is very important to c follow his/her medical instructions and medication recommendation.