A compound attribute that is the ratio of amount of charged multivesicular body protein 1a (human) in blood to amount of synaptosomal-associated protein 23 (human) in blood. The trait is OBA_2055578 (CHMP1A/SNAP23 protein level ratio in blood). Also known as: the ratio of amount of charged multivesicular body protein 1a (human) in blood to amount of synaptosomal-associated protein 23 (human) in blood.