Blood biomarkers may sharpen TBI severity assessment in emergency care
A multi-institution study led by University of Pittsburgh researchers established clinical thresholds for two blood proteins linked to brain injury. The team hopes these biomarker cutoffs will help emergency clinicians spot and triage traumatic brain injury cases that might otherwise be overlooked. The work was published in the Journal of Neurosurgery and draws on TRACK-TBI data.
The study set clinical cutoff values for GFAP and UCH-L1, proteins that enter the blood soon after head trauma and then decline. It used TRACK-TBI, a multicenter longitudinal effort with Pitt’s Neurotrauma Clinical Trials Center as its main biospecimen repository.
In U.S. emergency departments, TBI affects about 2.8 million people yearly and can cause death, lasting disability, and poor outcomes. Head CT is fast and common, yet roughly one quarter of intracranial abnormalities may escape it; MRI is more sensitive but too slow and costly for emergency triage.
If adopted, these cutoffs could help emergency teams flag patients whose CT scans look normal but who may still need follow-up, potentially reducing missed injuries and improving triage. Patients, families, and clinicians may benefit from clearer decisions about imaging and care escalation, though the approach’s real-world effect will depend on validation, availability, and integration into emergency workflows.