The mean 5HT was (86.2414.37) nmol/L and 5HIAA was (62.378.34) nmol/L in maternal plasma of patients with PIH. While the mean 5HT was (71.5610.13) nmol/L and 5HIAA was (62.3711.37) nmol/L in umbilical plasma in PIH group.

• 妊高征组母血中5?HT为（86.；24±14