CPXM1/DKK1 protein level ratio in blood (Ontology of Biological Attributes id OBA_2054597) can be described as follows. A compound attribute that is the ratio of amount of probable carboxypeptidase X1 (human) in blood to amount of dickkopf-related protein 1 (human) in blood. Also known as: the ratio of amount of probable carboxypeptidase X1 (human) in blood to amount of dickkopf-related protein 1 (human) in blood.