abnormal circulating protein level abnormal acute phase protein level abnormal circulating serum amyloid protein level 2010-07-05T01:22:14Z MP:0010214 MPheno.ontology abnormal SAA protein level abnormal Serum Amyloid A Protein level csmith deviation from the normal blood levels of an acute-phase reaction protein that is a precursor to amyloid A protein; it is present in very high levels during acute inflammatory episodes, and is present in low concentrations in normal sera, but is found at higher concentrations in sera of older persons and in patients with amyloidosis