A compound attribute that is the ratio of amount of angiopoietin-1 (human) in blood to amount of probable carboxypeptidase X1 (human) in blood. The trait is ANGPT1/CPXM1 protein level ratio in blood (OBA_2054269, an Ontology of Biological Attributes entry). Also known as: the ratio of amount of angiopoietin-1 (human) in blood to amount of probable carboxypeptidase X1 (human) in blood.