DCXR/PTS protein level ratio in blood (OBA_2054069) can be described as follows. A compound attribute that is the ratio of amount of L-xylulose reductase (human) in blood to amount of 6-pyruvoyl tetrahydrobiopterin synthase (human) in blood. Also known as: the ratio of amount of L-xylulose reductase (human) in blood to amount of 6-pyruvoyl tetrahydrobiopterin synthase (human) in blood.