A compound attribute that is the ratio of amount of centrosomal protein 20 (human) in blood to amount of Delta(14)-sterol reductase LBR (human) in blood. The trait is CEP20/LBR protein level ratio in blood (OBA_2054259, an Ontology of Biological Attributes term). Also known as: the ratio of amount of centrosomal protein 20 (human) in blood to amount of Delta(14)-sterol reductase LBR (human) in blood.