What is the most accurate test to confirm a seizure?

The most accurate test to confirm a seizure is the Electroencephalogram (EEG), as it directly measures electrical activity in the brain. During a seizure, there are characteristic patterns of abnormal electrical discharge that can be detected on the EEG. This makes it a valuable diagnostic tool for identifying the occurrence of seizures and understanding their nature.

While other tests, such as MRI and X-ray imaging, can provide important information regarding structural abnormalities in the brain, they do not specifically measure electrical activity and may not capture the dynamics of a seizure as it occurs. A blood glucose test, while essential in assessing metabolic conditions that could induce seizure-like activity, does not confirm the presence of a seizure itself. Therefore, the EEG is recognized as the standard for diagnosing seizures due to its ability to reflect real-time neurological activity.