Patterns of Plasma Biomarker Expression in 28 Children by Day of Admission by Severity of Traumatic Brain Injury and by Day of Admission Mild TBI: Admission GCS 13–15, Moderate TBI: Admission GCS: 9–12, Severe TBI: Admission GCS: 3–8 D1 = Admission day one, D10 = Admission day ten Data suggest that compared to mild and moderate TBI, patients with severe TBI have higher levels of AP-2, IL-6, and EC-2 through day 10 after admission