A compound attribute that is the ratio of amount of copper transport protein ATOX1 (human) in blood to amount of synaptosomal-associated protein 29 (human) in blood. The trait is ATOX1/SNAP29 protein level ratio in blood (Ontology of Biological Attributes term OBA_2054113). Also known as: the ratio of amount of copper transport protein ATOX1 (human) in blood to amount of synaptosomal-associated protein 29 (human) in blood.