An sFlt-1:PlGF ratio of 655 is not a reliable cut-off value for predicting perinatal outcomes in women with preeclampsia

An sFlt-1:PlGF ratio above 655 is not predictive of impaired perinatal outcomes, and insufficiently reliable for predicting outcomes in cases with clinical signs of preeclampsia. Our data suggest that an extremely high sFlt-1:PlGF ratio above 1000 might be more useful.