blood peptide hormone level blood pro-A-type natriuretic peptide level 2020-07-27T17:16:15Z CMO:0003505 EFO:0004789 This is a measurement of the amount of pro hormone ANP (NPPA) peptides (proANP 1-30 [first 30 amino acids(a.a) of the 126 a.a atrial natriuretic peptide (ANP) prohormone], proANP 31-67 (a.a 31-67), and/or full length proANP (a.a 1-126) in a specified volume of blood. atrial natriuretic factor measurement blood atrial natriuretic factor prohormone level blood atrial natriuretic peptide prohormone level clinical_measurement_ontology slaulede