GRAP2/LAT protein level ratio in blood (OBA_2053439) can be described as follows. A compound attribute that is the ratio of amount of GRB2-related adapter protein 2 (human) in blood to amount of linker for activation of T-cells family member 1 (human) in blood. Also known as: the ratio of amount of GRB2-related adapter protein 2 (human) in blood to amount of linker for activation of T-cells family member 1 (human) in blood.