Reference ranges
NT-proBNP reference range
Reference ranges describe the interval a laboratory prints next to your result. They are not a diagnosis of what is “normal” for you personally — your clinician interprets results in context.
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What NT-proBNP measures
When the heart wall stretches under strain, related peptides can rise in the blood. Labs report an NT-proBNP concentration using their method and units.
Why ranges differ
Laboratories set their own reference intervals using their methods, equipment, and population data. That is why the range on your Quest report may differ from a LabCorp report — always use the interval printed on your source document.
Common units
NT-proBNP is often reported in pg/mL. Confirm units on your original report before comparing values across time.