FDA recently approved - fms-like tyrosine kinase 1 (s-Flt1) / placental growth factor (PlGF), for diagnosing preeclampsia. sFlt1:PlGF≤38 rules out preeclampsia in SLE sFlt1:PlGF>85 modestly predicts preeclampsia Proteinuria impacts prediction accuracy #ACR24 abst#0809 @RheumNow