level of amyloid beta A4 precursor protein-binding family B member 1-interacting protein in blood serum (Ontology of Biological Attributes entry OBA_2040614) is the amount of a amyloid beta A4 precursor protein-binding family B member 1-interacting protein when measured in blood serum. Also known as: blood serum amyloid beta A4 precursor protein-binding family B member 1-interacting protein amount.