A compound attribute that is the ratio of amount of 2,4-dienoyl-CoA reductase [(3E)-enoyl-CoA-producing], mitochondrial (human) in blood to amount of peptidyl-prolyl cis-trans isomerase FKBP1B (human) in blood. The trait is DECR1/FKBP1B protein level ratio in blood (OBA_2054075, an Ontology of Biological Attributes entry). Also known as: the ratio of amount of 2,4-dienoyl-CoA reductase [(3E)-enoyl-CoA-producing], mitochondrial (human) in blood to amount of peptidyl-prolyl cis-trans isomerase FKBP1B (human) in blood.