From: Difference of concentration of placental soluble fms-like tyrosine kinase-1(sFlt-1), placental growth factor (PlGF), and sFlt-1/PlGF ratio in severe preeclampsia and normal pregnancy
Characteristic
Group
r value
Preeclampsia (n = 18)
Normal (n = 19)
sFlt-1/PlGF (pg/ml)
Median
303.0
20.2
0.186
Range
4.71–2646.57
2.49–238.73
−0.347
−0.508