Sample collection of a third clinical trial has been completed at Satasairaala hospital in Pori, Finland. The trial aims to demonstrate the biomarker feasibility to detect concussion in head injured children. A total of 58 children and adolescents in age 0–17 years were recruited: 28 with suspected mild TBI and 30 healthy controls. Sample analysis is underway at the moment. The study is also extendable to two foreign sites, depending on funding.