A compound attribute that is the ratio of amount of chordin-like protein 1 (human) in blood to amount of SPARC-related modular calcium-binding protein 2 (human) in blood. The trait is Ontology of Biological Attributes id OBA_2055586 (CHRDL1/SMOC2 protein level ratio in blood). Also known as: the ratio of amount of chordin-like protein 1 (human) in blood to amount of SPARC-related modular calcium-binding protein 2 (human) in blood.