The amount of a 2,4-dienoyl-CoA reductase [(3E)-enoyl-CoA-producing], mitochondrial when measured in blood. The trait is level of 2,4-dienoyl-CoA reductase [(3E)-enoyl-CoA-producing], mitochondrial in blood (OBA_2051106). Also known as: blood 2,4-dienoyl-CoA reductase [(3E)-enoyl-CoA-producing], mitochondrial amount.