A compound attribute that is the ratio of amount of Fc receptor-like protein 2 (human) in blood to amount of beta-klotho (human) in blood. The trait is Ontology of Biological Attributes id OBA_2055220 (FCRL2/KLB protein level ratio in blood). Also known as: the ratio of amount of Fc receptor-like protein 2 (human) in blood to amount of beta-klotho (human) in blood.