Natriuretic Peptides
(ANP; BNP)

Alternate Names

  • Atrial Natriuretic Peptide
  • Brain Natriuretic Peptide
  • N-terminal fragment of Pro-brain (B-type)
  • Natriuretic Peptide (NT-pro-BNP)
  • (CNP (C-type Natriuretic Peptide)
  • Ventricular Natriuretic Peptide
  • CHF Peptides
  • Amyloid Beta Protein Precursor, soluble (s

There are three different types of natriuretic peptides, and each type is specific to the area of the body that is damaged. ANP (atrial natriuretic peptide) is made in the atrium of the heart. BNP (brain natriuretic peptide) is made in the ventricles of the heart, and is the NP most commonly tested. High BNP blood levels are an indicator of congestive heart failure (CHF). The blood level corresponds to the severity of the injury, and is specific to the heart. CNP (c-type natriuretic peptide) is made in the intestinal tract.

BNP levels are also an indication of heart attack, high blood pressure, or heart rejection after transplant. When levels do not quickly decrease following CHF or heart attack, this indicates an increased risk of death from repeat future cardiac events. BNP levels are normally higher in women than men, and in the elderly.

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