The amount of a heparan-sulfate 6-O-sulfotransferase 3 (human) when measured in cerebrospinal fluid. The trait is level of heparan-sulfate 6-O-sulfotransferase 3 (human) in cerebrospinal fluid (OBA_2059735). Also known as: cerebrospinal fluid heparan-sulfate 6-O-sulfotransferase 3 (human) amount.