SNX9/STK4 protein level ratio in blood (OBA_2055692) can be described as follows. A compound attribute that is the ratio of amount of sorting nexin-9 (human) in blood to amount of serine/threonine-protein kinase 4 (human) in blood. Also known as: the ratio of amount of sorting nexin-9 (human) in blood to amount of serine/threonine-protein kinase 4 (human) in blood.