ARSB/GLB1 protein level ratio in blood (OBA_2054098, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of arylsulfatase B (human) in blood to amount of beta-galactosidase (human) in blood. Also known as: the ratio of amount of arylsulfatase B (human) in blood to amount of beta-galactosidase (human) in blood.