What is considered a normal level for B-type Natriuretic Peptide (BNP)?

A normal level for B-type Natriuretic Peptide (BNP) is considered to be under 100 picograms per milliliter. BNP is a hormone released by the heart in response to ventricular volume expansion and pressure overload, commonly used to evaluate heart failure. Levels below 100 are generally indicative of the absence of heart failure, while higher levels can suggest worsening heart function or heart failure. This threshold helps clinicians determine the likelihood of heart failure in patients presenting with symptoms such as shortness of breath or edema. Thus, identifying BNP levels under 100 helps in the assessment of cardiac function effectively.