A compound attribute that is the ratio of amount of secretogranin-1 (human) in blood to amount of receptor-type tyrosine-protein phosphatase N2 (human) in blood. The trait is CHGB/PTPRN2 protein level ratio in blood (Ontology of Biological Attributes entry OBA_2055564). Also known as: the ratio of amount of secretogranin-1 (human) in blood to amount of receptor-type tyrosine-protein phosphatase N2 (human) in blood.