A compound attribute that is the ratio of amount of Rho guanine nucleotide exchange factor 12 (human) in blood to amount of 2,4-dienoyl-CoA reductase [(3E)-enoyl-CoA-producing], mitochondrial (human) in blood. The trait is ARHGEF12/DECR1 protein level ratio in blood (OBA_2054088). Also known as: the ratio of amount of Rho guanine nucleotide exchange factor 12 (human) in blood to amount of 2,4-dienoyl-CoA reductase [(3E)-enoyl-CoA-producing], mitochondrial (human) in blood.