Description

BNP stands for B-type natriuretic peptide, a hormone that helps regulate blood circulation. It's also known as brain natriuretic peptide because it was first discovered in brain tissue. 

What it does

  • BNP is released by the heart in response to increased blood volume or stress 
  • BNP prompts the kidneys to remove salt and water from the body 
  • BNP levels increase when the heart is working harder than normal, such as during heart failure 

Why it's important

  • A BNP test is a quick and important tool for diagnosing heart failure 
  • BNP levels can help determine if heart failure is getting better or worse 
  • BNP levels can help distinguish between cardiogenic and non-cardiogenic causes of dyspnea 

Fasting not required.