A compound attribute that is the ratio of amount of receptor-type tyrosine-protein phosphatase N2 (human) in blood to amount of retbindin (human) in blood. The trait is PTPRN2/RTBDN protein level ratio in blood (OBA_2053221). Also known as: the ratio of amount of receptor-type tyrosine-protein phosphatase N2 (human) in blood to amount of retbindin (human) in blood.