Objective: To evaluate the predisposing factors associated with abnormal laboratory findings in patients who came to the emergency room due to a first seizure.

Methods: Patients were divided into separate groups based on normal and abnormal laboratory results for sodium, potassium, calcium, and glucose. The difference in age, gender, whether this was the first attack, whether there was fever, whether there were gastrointestinal symptoms, the duration and pattern of the seizure, and whether there was a seizure at the emergency department, were evaluated.

Inclusion Criteria:

• Age: less than 18 years old
• The patient came to emergency department due to seizure
• The patient received blood sampling including serum sodium, potassium, calcium and glucose.

Exclusion Criteria:

• The patient came to the outpatient department.
• The patient did not received blood sampling at emergency room.
• The seizure occurred after admission.

500 patients who come to wanfang hospital due to seizure