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Table 4 Diagnostic accuracy of S100B concentrations in prehospital blood samples for ruling out of traumatic intracranial lesions in mild TBI patients

From: Diagnostic accuracy of prehospital serum S100B and GFAP in patients with mild traumatic brain injury: a prospective observational multicenter cohort study – “the PreTBI I study”

Prehospital Blood Samples Intracranial Lesion  
S100B Yes No Total
≥0.10 μg/L 32 452 484
< 0.10 μg/L 0 82 82
Total 32 534 566
Sensitivity % (95%CI) 100.0 (89.1;100)
Specificity % (95%CI) 15.4 (12.4;18.7)
Positive Predictive Value% (95%CI) 6.6 (4.6;9.2)
Negative Predictive Value % (95%CI) 100.0 (95.6;100)