level of 4-hydroxy-2-oxoglutarate aldolase, mitochondrial in blood serum (OBA_2044731, an Ontology of Biological Attributes term) is the amount of a 4-hydroxy-2-oxoglutarate aldolase, mitochondrial when measured in blood serum. Also known as: blood serum 4-hydroxy-2-oxoglutarate aldolase, mitochondrial amount.