A compound attribute that is the ratio of amount of platelet-derived growth factor subunit A (human) in blood to amount of synaptosomal-associated protein 23 (human) in blood. The trait is PDGFA/SNAP23 protein level ratio in blood (OBA_2054050). Also known as: the ratio of amount of platelet-derived growth factor subunit A (human) in blood to amount of synaptosomal-associated protein 23 (human) in blood.