level of dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48 kDa subunit in blood serum (OBA_2041256, an Ontology of Biological Attributes identifier) is the amount of a dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48 kDa subunit when measured in blood serum. Also known as: blood serum dolichyl-diphosphooligosaccharide--protein glycosyltransferase 48 kDa subunit amount.