Teran CG, et al. Febrile Seizures: Current Role of the Laboratory Investigation and Source of the Fever in the Diagnostic Approach. 
Peds Emergency Care, Vol 28(6), June 2012: 493-497

Overuse of laboratory, cultures and imaging are common errors of over-utilization of ancillary services in management of children with febrile seizures.

This article documents the extensive over-utilization of these tests by outpatient providers. The etiology of most fevers associated with febrile seizures is viral, and ED workup should usually be minimal—often with no tests at all after thorough clinical assessment.

The occurrence of a febrile seizure does not suggest any higher level of severity of illness or probability of serious bacterial disease, and evaluation should be dictated by the clinical assessment.