A compound attribute that is the ratio of amount of linker for activation of T-cells family member 2 (human) in blood to amount of leukocyte elastase inhibitor (human) in blood. The trait is LAT2/SERPINB1 protein level ratio in blood (OBA_2054884). Also known as: the ratio of amount of linker for activation of T-cells family member 2 (human) in blood to amount of leukocyte elastase inhibitor (human) in blood.