S100B and fetal growth restriction: Amniotic fluid S100B levels were higher in PE than NP. Concentration of S100B in amniotic fluid in PE (0.47 μg/L) & normotensive IUGR (0.60 μg/L) were significantly higher than in NP (0.18 μg/L). p < 0.05. At 33 weeks, AUC for S100B 0.95 (0.82–1.00)