UW Hospital and Clinics Lab Test Directory
| Test Name: |
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B-Type Natriuretic Peptide
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| Test Code(s): |
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BNP / XBNP
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| CPT Code(s): |
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83880
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| Methodology: |
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Chemiluminescent Immunoassay
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| Days Performed: |
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Daily, 24 hours.
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| Turnaround Time: |
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Stat: 1 hour.
Routine: 4 hours.
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Specimen Requirements
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| Specimen: |
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Blood
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| Collection Container: |
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Preferred: Lavender top
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| Collection Volume: |
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Preferred: 4 mL
Pediatrics: 1 mL
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| Sample Analyzed: |
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Plasma
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| Volume Required: |
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Preferred: 1 mL
Pediatrics: 0.5 mL
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| Specimen Processing: |
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Centrifuge. Transfer cell-free plasma to plastic vial. Freeze specimen.
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| Specimen Transport: |
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Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location. Transport frozen plasma on dry ice.
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| Unacceptable Criteria: |
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Glass tubes are not acceptable for this method.
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| Stability: |
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Ambient: 4 hours
Refrigerated: plasma - 24 hours
Frozen: plasma - 9 months
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Interpretation
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Reference Interval:
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0-99 pg/mL
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| Test Limitations: |
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Results may be affected if patient has developed heterophilic antibodies due to exposure to animal based protein products.
A high dose hook effect is not seen up to 100,000 ng/mL.
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Peptide, B-Type Natriuretic BNP
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