S100B and Behcet disease: GCS at admission and the last GCS had predictive value in confirming brain death (p<0.0005). A negative correlation was observed between GCS and S100b. Patients with BD present significantly higher mean levels of S100b (2.36±0.94 μg/L) compared to patients with clinical death (1.46±0.51 μg/L) or those who survive (1.04±0.5 μg/L).