The amount of a alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase 1 (human) when measured in cerebrospinal fluid. The trait is level of alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase 1 (human) in cerebrospinal fluid (OBA_2081239). Also known as: cerebrospinal fluid alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase 1 (human) amount.