Ontology of Biological Attributes id OBA_2051336 (level of 1,25-dihydroxyvitamin D(3) 24-hydroxylase, mitochondrial in blood) is the amount of a 1,25-dihydroxyvitamin D(3) 24-hydroxylase, mitochondrial when measured in blood. Also known as: blood 1,25-dihydroxyvitamin D(3) 24-hydroxylase, mitochondrial amount.