GFRA3/TMPRSS5 protein level ratio in blood (OBA_2053702) can be described as follows. A compound attribute that is the ratio of amount of GDNF family receptor alpha-3 (human) in blood to amount of transmembrane protease serine 5 (human) in blood. Also known as: the ratio of amount of GDNF family receptor alpha-3 (human) in blood to amount of transmembrane protease serine 5 (human) in blood.