BNP (B-type Natriuretic Peptide)

B-type Natriuretic Peptide (BNP) is a hormone produced by the heart in response to increased pressure and stretching of the heart's chambers, often due to heart failure. It helps the body get rid of excess salt and water through urination, reducing blood volume and easing the heart's workload. Doctors measure BNP levels with a blood test to diagnose or assess the severity of heart failure. Elevated BNP indicates that the heart is under stress and may not be functioning properly, helping guide treatment decisions.