A compound attribute that is the ratio of amount of TBC1 domain family member 23 (human) in blood to amount of tubulinyl-Tyr carboxypeptidase 1 (human) in blood. The trait is OBA_2053035 (TBC1D23/VASH1 protein level ratio in blood). Also known as: the ratio of amount of TBC1 domain family member 23 (human) in blood to amount of tubulinyl-Tyr carboxypeptidase 1 (human) in blood.