A compound attribute that is the ratio of amount of forkhead box protein O1 (human) in blood to amount of synaptosomal-associated protein 23 (human) in blood. The trait is Ontology of Biological Attributes id OBA_2054148 (FOXO1/SNAP23 protein level ratio in blood). Also known as: the ratio of amount of forkhead box protein O1 (human) in blood to amount of synaptosomal-associated protein 23 (human) in blood.