BNP blood test
The brain natriuretic peptide or BNP blood test measures the level of B-Natriuretic Peptide in your blood. This protein hormone is produced in excess when the heart's ventricles are not functioning properly. When there is heart failure, the ventricles secrete BNP and N-terminal-pro-BNP (NT-pro-BNP). Natriuretic peptides promote better blood circulation, urine excretion and heart functioning. Both BNP and NT—Pro BNP are markers of atrial and ventricular distension caused due to raised intra-cardiac pressure.
Typically, the BNP test helps determine if a person is suffering heart failure, when there are symptoms that can be indicative of other conditions too. Blood BNP levels are also indicative of the exercise tolerance and risk of death in a person suffering from CHF (congestive heart failure).
You may need to fast for about 10 hours prior to a BNP blood test. BNP blood test is usually measured by the Triage test and the test usually takes about 15 minutes. The elevated BNP values indicate the severity of the heart condition. While BNP levels below 100 pg/mL indicate no heart failure, BNP levels above 600 pg/mL indicate moderate heart failure. The diagnostic gray area of levels between I00 and 500 pg/mL shows inconclusive result. If BNP levels are above 900 pg/mL, it is indicative of severe heart failure. Medication affects the levels of BNP. BNP values tend to be elevated with increasing age and noticed to be higher in women than men. Conditions such as chronic obstructive pulmonary disease (COPD), kidney disease or kidney dialysis can alter the BNP blood readings.
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Collection of Pages - Last revised Date: May 25, 2020