What is the threshold for NT-proBNP level for suspected heart failure?
The threshold for NT-proBNP level for suspected heart failure is 400 and 2,000 ng/litre (47 to 236 pmol/litre). People with an NT-proBNP level below 400 ng/litre (47 pmol/litre) in an untreated person makes a diagnosis of heart failure less likely, and it is recommended to review alternative causes for symptoms of heart failure.