The amount of a beta-galactoside alpha-2,6-sialyltransferase 1 (human) when measured in cerebrospinal fluid. The trait is level of beta-galactoside alpha-2,6-sialyltransferase 1 (human) in cerebrospinal fluid (Ontology of Biological Attributes term OBA_2057206). Also known as: cerebrospinal fluid beta-galactoside alpha-2,6-sialyltransferase 1 (human) amount.