A compound attribute that is the ratio of amount of beta-galactosidase (human) in blood to amount of beta-glucuronidase (human) in blood. The trait is GLB1/GUSB protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2053706). Also known as: the ratio of amount of beta-galactosidase (human) in blood to amount of beta-glucuronidase (human) in blood.