Plasma concentrations of PlGF in normal pregnant women, pregnant women with acute pyelonephritis, and patients with preeclampsia. Pregnant women with acute pyelonephritis and patients with preeclampsia had median plasma concentrations of PlGF lower than normal pregnant women (normal pregnancy: median 896 pg/ml, inter-quartile range (IQR) 567-1,200 pg/ml; acute pyelonephritis: median 366 pg/ml, IQR 154-547 pg/ml; preeclampsia: median 67 pg/ml, IQR 0-120.6 pg/ml; both p<0.001). However, patients with preeclampsia had a median plasma concentration of PlGF lower than those with acute pyelonephritis (p<0.001). *:p<0.05.