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Lab Dept:
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Chemistry
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Test Name:
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B-TYPE NATRIURETIC PEPTIDE
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General Information
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Lab Order Codes:
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BTNP
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Synonyms:
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BNP; Brain Natriuretic Peptide
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CPT Codes:
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83880 – Natriuretic peptide
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Test Includes:
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B-type Natriuretic Peptide level reported in pg/mL.
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Logistics
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Test Indications:
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B-type natriuretic peptide is a hormone produced by the heart. A B-type Natriuretic Peptide (BNP) test measures the amount of this hormone in blood. Normally, only low levels of BNP are found in the blood. However, if the workload of the heart increases, such as from heart failure, the heart releases additional BNP. The level of BNP in the blood rises when heart failure is present and drops when heart failure is successfully treated.
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Lab Testing Sections:
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Chemistry - Sendouts
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Referred to:
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Abbott Northwestern Hospital Laboratory (ANW: BNP)
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Phone Numbers:
Minneapolis:
Saint Paul:
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612-813-6280
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651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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1 day or STAT: 2 hours
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Special Instructions:
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N/A
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Specimen
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Specimen Type:
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Blood
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Container:
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Lavender top (EDTA) tube
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Draw Volume:
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3 mL (Minimum: 1.5 mL) blood
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Processed Volume:
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1 mL (Minimum: 0.5 mL) plasma
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Collection:
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Routine venipuncture
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Special Processing:
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Lab Staff: Centrifuge specimen, remove plasma aliquot into a screw-capped round bottom plastic vial. Store and ship at frozen temperatures. If the specimen is to be analyzed within 4 hours of collection, it may be stored and shipped at refrigerated temperatures. Forward promptly.
Minneapolis lab should call Allina Customer Service to request a pick-up 612-863-4678 (press#1). St. Paul lab should tube samples to United Laboratory.
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Patient Preparation:
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None
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Sample Rejection:
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Hemolysis
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Interpretive
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Reference Range:
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Gender/Age:
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Range (pg/mL):
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Male:
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<100 pg/mL
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Female (<75 yrs):
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<150 pg/mL
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Female (>75 yrs):
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<265 pg/mL
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Critical Values:
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N/A
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Limitations:
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N/A
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Methodology:
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Abbott Architect
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Contraindications:
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N/A
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References:
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Abbott Northwestern Hospital Laboratory, August 2012
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Updates:
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8/7/2012: Updated reference range due to instrument change. Previously listed at <100 pg/mL for all genders and ages.
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