Ontology of Biological Attributes identifier OBA_2041936 (level of heparan-sulfate 6-O-sulfotransferase 3 in blood serum) is the amount of a heparan-sulfate 6-O-sulfotransferase 3 when measured in blood serum. Also known as: blood serum heparan-sulfate 6-O-sulfotransferase 3 amount.