COMP/TGFBI protein level ratio in blood (OBA_2053844) can be described as follows. A compound attribute that is the ratio of amount of cartilage oligomeric matrix protein (human) in blood to amount of transforming growth factor-beta-induced protein ig-h3 (human) in blood. Also known as: the ratio of amount of cartilage oligomeric matrix protein (human) in blood to amount of transforming growth factor-beta-induced protein ig-h3 (human) in blood.