A compound attribute that is the ratio of amount of sorting nexin-9 (human) in blood to amount of vacuolar protein sorting-associated protein VTA1 homolog (human) in blood. The trait is Ontology of Biological Attributes id OBA_2055694 (SNX9/VTA1 protein level ratio in blood). Also known as: the ratio of amount of sorting nexin-9 (human) in blood to amount of vacuolar protein sorting-associated protein VTA1 homolog (human) in blood.