Ontology of Biological Attributes id OBA_2054527 (CREG1/DPP7 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of protein CREG1 (human) in blood to amount of dipeptidyl peptidase 2 (human) in blood. Also known as: the ratio of amount of protein CREG1 (human) in blood to amount of dipeptidyl peptidase 2 (human) in blood.