FABP1/HNMT protein level ratio in blood (OBA_2055424, an Ontology of Biological Attributes id) can be described as follows. A compound attribute that is the ratio of amount of fatty acid-binding protein, liver (human) in blood to amount of histamine N-methyltransferase (human) in blood. Also known as: the ratio of amount of fatty acid-binding protein, liver (human) in blood to amount of histamine N-methyltransferase (human) in blood.