Evaluation of Biomarkers of Traumatic Brain Injury

Exclusion Criteria

• •participating in an interventional, therapeutic clinical study that may affect the results of this study (an observational study acceptable)
• •time of injury cannot be determined
• •primary diagnosis of ischemic or hemorrhagic stroke
• •venipuncture not feasible
• •a condition precluding entry into the CT scanner
• •subject has a neurodegenerative disease or other neurological disorder including dementia, Parkinson's disease, multiple sclerosis, seizure disorder, brain tumors, and history of neurosurgery, stroke or TIA within the last 30 days
• •administration of blood transfusion after head injury and prior to study blood draw
• •subject is otherwise determined by the Investigator to be unsuitable for participation