Moreover, predictive performance of the sFlt-1/PlGF ratio was similar between the PROGNOSIS validation cohort and the Chinese cohort for NPV for ruling out preeclampsia within 1 week (99.3 vs. 97.3%), PPV for ruling in preeclampsia within 4 weeks (36.7 vs. 35.0%), and area under the ROC curve (1 week, 86.1 vs. 75.6%; 4 weeks, 82.3 vs. 72.7%). Here, PGF is linked to preeclampsia.