Template:BNP value

Brain natriuretic peptide (BNP)

• <100 (Sn 90%, NPV 89%)
• > 500 (Sp 87%, PPV 90%)
• Elevated in:
  • Elderly, kidney failure, PE
• Decreased in:
  • Obese

• <100: CHF ruled out
• 100-400: Consider differential diagnosis and pre-test probability
• >400: Positive (see differential diagnosis)