NT-proBNP
NT-proBNP is a hormone fragment released by the heart when it is under stress or strain. It is used alongside BNP to evaluate heart failure.
Category: Cardiac Markers
Also known as: nt-probnp, nt probnp, n-terminal pro-bnp, nt pro bnp, n-terminal pro-b-type natriuretic peptide
Reference range: 0–125 pg/mL (Source: ABIM)
Standard unit: pg/mL
High values may indicate
High NT-proBNP levels may indicate heart failure, cardiac dysfunction, pulmonary embolism, or chronic kidney disease.
Low values may indicate
Low NT-proBNP levels are normal and help rule out heart failure as a cause of symptoms.
Frequently asked questions
- What is a normal NT-proBNP level?
- A typical reference range for NT-proBNP is 0–125 pg/mL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is NT-proBNP measured in?
- NT-proBNP is most commonly reported in pg/mL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do NT-proBNP reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track NT-proBNP over time?
- Yes. Upload results from any lab and BloodId charts your NT-proBNP over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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