Age < 16 years: Yes No

Is patient on blood thinners? Yes No

Is there a history of seizure post injury? Yes No

Glasgow coma scale < 15 after 2 hours post injury: Yes No

Suspected open or depressed skull fracture: Yes No

Basilar skull fracture signs such as racoon eyes, Hemotympanum, Battle’s Sign, CSF otorrhea or rhinorrhea: Yes No

More than or equal to 2 episodes of vomiting: Yes No

Age > 65 years: Yes No

Retrograde Amnesia for ≥ 30 mins: Yes No

Dangerous mechanism of injury such as padestrian struck by vehicle, fall > 3 feet or 5 stairs, person ejected from vehicle: Yes No