B-TYPE NATRIURETIC PEPTIDE (BNP)

B-Type Natriuretic Peptide (BNP)

What it is

The B-Type Natriuretic Peptide (BNP) test measures the level of BNP hormone in the blood. BNP is produced mainly by the heart’s ventricles in response to stretching caused by increased pressure or fluid overload. It is an important marker for diagnosing and monitoring heart failure.

Uses

This test helps in diagnosing heart failure, monitoring the severity of heart disease, evaluating unexplained shortness of breath, and distinguishing between heart-related and lung-related causes of symptoms. BNP testing is also used to monitor the effectiveness of treatment in patients with known heart conditions.

Symptoms That May Lead to the Test

Doctors may recommend a BNP test if you experience symptoms such as shortness of breath, fatigue, swelling in the legs or abdomen, persistent cough, or rapid weight gain due to fluid retention.

Abnormal Results

High BNP: Suggests heart failure, left ventricular dysfunction, acute coronary syndrome, pulmonary hypertension, or kidney disease.

Low BNP: Usually indicates no heart failure or well-controlled cardiac function.

Risks

The BNP test is a routine blood test with minimal risks. Possible side effects include mild pain, bruising, or bleeding at the puncture site, and rarely dizziness or infection.