Ontology of Biological Attributes entry OBA_2054478 (CST3/RELT protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of cystatin-C (human) in blood to amount of tumor necrosis factor receptor superfamily member 19L (human) in blood. Also known as: the ratio of amount of cystatin-C (human) in blood to amount of tumor necrosis factor receptor superfamily member 19L (human) in blood.