3-hydroxybutyrylcarnitine to O-decanoylcarnitine ratio in blood (OBA_2055822) can be described as follows. A compound attribute that is the ratio of level of 3-hydroxybutyrylcarnitine in blood to level of O-decanoylcarnitine in blood. Also known as: 3-hydroxy-butyrylcarnitine to decanoylcarnitine ratio in blood, C4-OH to C10 ratio in blood, the ratio of level of 3-hydroxybutyrylcarnitine in blood to level of O-decanoylcarnitine in blood.