NPPB and hydrops fetalis: Similarly in another study [97] both BNP and NT-proBNP had excellent negative predictive values for exclusion of HF in patients with clinical suspicion of HF; in this study, a BNP at a cut-off of 40 pg/ml had a NPV of 88%, and an NT-proBNP of 150 pg/ml gave a NPV of 92%.