Glasgow Coma Scale is a 3 to 15 point scale used to assess a patient's level of consciousness and level of neurologic functioning
Duration of loss of consciousness (LOC) is another measure of the severity of traumatic brain injury.
Mild Mental status change or LOC less than 30 minutes Moderate Mental status change or LOC 30 minutes to 6 hours Severe Mental status change or LOC for more than 6 hours
Galveston Orientation and Amnesia Test
The diagnosis of brain death is a clinical diagnosis that is sometimes made with the help of cerebral perfusion scintigraphy.
CT of the head
EEG
Doctor (MD)
Diplomate, American Board of Quality Assurance & Utilization Review Physicians