PGF and preeclampsia: PROGNOSIS (PRediction of short-term Outcome in preGNant wOmen with Suspected preeclampsIa Study), an international, prospective, observational study evaluated the use of sFlt-1/PlGF ratio, as determined by the Elecsys® sFlt-1 and Elecsys® PlGF assays, to predict the short-term (up to 4 weeks) risk of developing preeclampsia [26, 27].