NT-proBNP
Also written: BNP / NT-proBNP
What it measures
A substance released in greater amounts when the heart chambers are stretched.
Why it is ordered
Helps separate breathlessness of cardiac origin from other causes. It varies with age, kidney function and body weight, so it is not read alone.
How to prepare
Usually no fasting needed.
Units
pg/mL · ng/L — convert here
What to ask
- What does this say alongside my echocardiogram
- Will it be followed as a series
This page does not include reference ranges and does not say whether your number is high or low. Reference ranges differ between laboratories and between people — read yours on your own report, with your clinician.