A compound attribute that is the ratio of amount of fatty acid-binding protein, intestinal (human) in blood to amount of galectin-4 (human) in blood. The trait is FABP2/LGALS4 protein level ratio in blood (OBA_2055429). Also known as: the ratio of amount of fatty acid-binding protein, intestinal (human) in blood to amount of galectin-4 (human) in blood.