A compound attribute that is the ratio of amount of CCN family member 2 (human) in blood to amount of Kunitz-type protease inhibitor 2 (human) in blood. The trait is CCN2/SPINT2 protein level ratio in blood (OBA_2055229, an Ontology of Biological Attributes id). Also known as: the ratio of amount of CCN family member 2 (human) in blood to amount of Kunitz-type protease inhibitor 2 (human) in blood.