A compound attribute that is the ratio of amount of dickkopf-related protein 1 (human) in blood to amount of SPARC protein (human) in blood. The trait is DKK1/SPARC protein level ratio in blood (OBA_2054011). Also known as: the ratio of amount of dickkopf-related protein 1 (human) in blood to amount of SPARC protein (human) in blood.