Similarly, diagnostic effectiveness at 36 weeks’ gestation for preterm delivery of an SGA infant associated with maternal preeclampsia or perinatal morbidity/mortality was characterized by 37.9% sensitivity, 97.8% specificity, 21.6% PPV, and 99.0% NPV (Table S1 in the online-only Data Supplement).38 Consistent with these findings, MacDonald et al40 demonstrated clinical utility of sFlt-1, PlGF, and their ratio for detecting SGA infants or preeclampsia at 36 weeks’ gestation. Here, PGF is linked to preeclampsia.