Summary of Study #2

Fresh plasma samples were obtained from four clinical sites of the Transforming Research and Clinical Knowledge in

Traumatic Brain Injury (TRACK-TBI) study in the United States.3

- Inclusion/Exclusion Criteria: Adults ≥18 years, presenting to Emergency Department with GCS 13-15, who had a head CT performed at 4 sites in the U.S.
- The study population (n=88) had a mean age of 42.5 years and ranged from 18 to 85 years. Nearly three quarters (71.2%) were male.
- Most had a GCS of 15 (81.8%) and over half had loss of consciousness (68.2%), presence of confusion (67.0%), or post-traumatic amnesia (68.2%).
- The median time between injury and blood draw was 4.3 hours with a range of 2.0 to 11.8 hours.