A compound attribute that is the ratio of amount of pyridoxal phosphate homeostasis protein (human) in blood to amount of stress-induced-phosphoprotein 1 (human) in blood. The trait is PLPBP/STIP1 protein level ratio in blood (OBA_2053520). Also known as: the ratio of amount of pyridoxal phosphate homeostasis protein (human) in blood to amount of stress-induced-phosphoprotein 1 (human) in blood.