| BNP (all ages) |
|---|
| HF is unlikely |
| <100 pg/mL |
| HF is possible but other diagnoses need to be considered |
| 100-500 pg/mL |
| HF is very likely |
| >500 pg/mL |
| NT-proBNP (ages < 50 years) |
| HF is unlikely |
| <300 pg/mL |
| HF is possible but other diagnoses need to be considered |
| 300-450 pg/mL |
| HF is very likely |
| >450 pg/mL |
| NT-proBNP (ages 50-75 years) |
| HF is unlikely |
| <300 pg/mL |
| HF is possible but other diagnoses need to be considered |
| 450-900 pg/mL |
| HF is very likely |
| >900 pg/mL |
| NT-proBNP (ages > 75 years) |
| HF is unlikely |
| <300 pg/mL |
| HF is possible but other diagnoses need to be considered |
| 900 - 1800 pg/mL |
| HF is very likely |
| >1800 pg/mL |
BNP, B-type natriuretic peptide; HF, heart failure; NT-proBNP, aminoterminal fragment propeptide B-type natriuretic peptide.