level of alpha-N-acetylneuraminide alpha-2,8-sialyltransferase in blood serum (Ontology of Biological Attributes entry OBA_2043681) is the amount of a alpha-N-acetylneuraminide alpha-2,8-sialyltransferase when measured in blood serum. Also known as: blood serum alpha-N-acetylneuraminide alpha-2,8-sialyltransferase amount.