PGF and preeclampsia: In our study, the serum PlGF level was decreased (86 ± 26.9 pg/ml versus 155 ± 63.89 pg/ml) and the serum sFlt-1 level was elevated (2575 ± 775.03 pg/ml versus 453 ± 156.24 pg/ml) in the pregnant women with preeclampsia than the pregnant women without preeclampsia.