This test measures the amount of Brain Natriuretic Peptide or BNP in the blood. BNP is produced by the heart. Elevated levels of BNP often indicate the heart is working harder than normal such as when a person is suffering from heart failure.
This test can be ordered when someone is experiencing symptoms such as difficulty breathing or swelling in the arms and legs which may be due to heart failure. It may also be used to monitor how well a person is responding to treatment for heart failure. Because BNP levels tend to increase with age, a person's doctor may need to determine what a normal BNP value for them should be.
Please see our Heart Health category for additional tests to screen for heart disease.
Turnaround time for the BNP test is typically 2-3 business days.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
While the BNP test does not require fasting, your doctor may recommend 8-12 hours of fasting prior to specimen collection. Someone who is taking heart medications should consult with their prescribing physician to determine if they should stop prior to being tested.
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