A compound attribute that is the ratio of amount of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 2 (human) in blood to amount of leukocyte elastase inhibitor (human) in blood. The trait is PFKFB2/SERPINB1 protein level ratio in blood (OBA_2054005). Also known as: the ratio of amount of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 2 (human) in blood to amount of leukocyte elastase inhibitor (human) in blood.