GFAP and concussion: Neither EV NfL nor EV GFAP discriminated smcTBI from IC (AUC = 53.9%, 95% CI 29.78–78.01% for NfL; AUC = 54.4%, 95% CI 35.19–73.61%, for GFAP) or mTBI groups (AUC = 44.82%, 95% CI 27.41–62.23%, for NfL; AUC = 48.81%; 95% CI 33.71–63.91%, for GFAP) one or more years after the injury.