PGF and preeclampsia: PlGF <12 pg/mL had a positive predictive value for predicting preeclampsia with delivery within 14 days of 40.8% (95% CI, 32.1%–49.9%), rising to 72.0% (95% CI, 63.3%–79.7%) for 28 days; sFlt-1/PlGF >85 had a positive predictive value for predicting preeclampsia with delivery within 14 days of 28.0% (95% CI, 18.2%–39.6%), increasing to 62.7% (95% CI, 50.7%–73.6%) for 28 days.