OBA_2055589 (EFEMP1/FSTL3 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of EGF-containing fibulin-like extracellular matrix protein 1 (human) in blood to amount of follistatin-related protein 3 (human) in blood. Also known as: the ratio of amount of EGF-containing fibulin-like extracellular matrix protein 1 (human) in blood to amount of follistatin-related protein 3 (human) in blood.