B-Type Natriuretic Peptide (BNP) CPT: 83880

Special Instructions

This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H, or coenzyme R). It is recommended to ask all patients who may be indicated for this test about biotin supplementation. Patients should be cautioned to stop biotin consumption at least 72 hours prior to the collection of a sample.

Expected Turnaround Time

Within 1 day

Specimen Requirements


Plasma, frozen


0.8 mL

Minimum Volume

0.5 mL


Serum Separator tube


Do not collect in glass. Collect in a Serum Separator tube. Freeze within 24 hours and maintain frozen until tested. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.

Storage Instructions

Freeze. Unstable at room temperature. Stable refrigerated up to 24 hours or frozen up to 9 months.

Patient Information

To help detect, diagnose, and in some cases evaluate the severity of heart disease, including congestive heart failure (CHF).

When you have symptoms such as shortness of breath, fatigue, excessive fluid in your abdomen, and swollen ankles and legs after a heart attack or during treatment for heart disease.

A blood sample drawn from a vein.