PCDH17/PTPRM protein level ratio in blood (Ontology of Biological Attributes id OBA_2055161) can be described as follows. A compound attribute that is the ratio of amount of protocadherin-17 (human) in blood to amount of receptor-type tyrosine-protein phosphatase mu (human) in blood. Also known as: the ratio of amount of protocadherin-17 (human) in blood to amount of receptor-type tyrosine-protein phosphatase mu (human) in blood.