NT-proBNP Test
A hormone fragment released when the heart is stretched. The standard marker of heart-failure status.
What is NT-proBNP?
A hormone fragment released when the heart is stretched. The standard marker of heart-failure status.
NT-proBNP Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| age 18–49 | 0.000 – 125 pg/mL |
| age 50–75 | 0.000 – 450 pg/mL |
| age 76+ | 0.000 – 900 pg/mL |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
What your NT-proBNP result may mean
Often reflects heart failure or cardiac strain. Levels rise with age and decline with body weight.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Related Heart Health biomarkers
Markers commonly tested alongside NT-proBNP.
Frequently asked
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