A compound attribute that is the ratio of amount of tumor necrosis factor receptor superfamily member EDAR (human) in blood to amount of syndecan-4 (human) in blood. The trait is Ontology of Biological Attributes term OBA_2055629 (EDAR/SDC4 protein level ratio in blood). Also known as: the ratio of amount of tumor necrosis factor receptor superfamily member EDAR (human) in blood to amount of syndecan-4 (human) in blood.