FABP1/RBP5 protein level ratio in blood (Ontology of Biological Attributes entry OBA_2055427) 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 retinol-binding protein 5 (human) in blood. Also known as: the ratio of amount of fatty acid-binding protein, liver (human) in blood to amount of retinol-binding protein 5 (human) in blood.