The amount of a bifunctional 3'-phosphoadenosine 5'-phosphosulfate synthase 1 (human) when measured in cerebrospinal fluid. The trait is level of bifunctional 3'-phosphoadenosine 5'-phosphosulfate synthase 1 (human) in cerebrospinal fluid (OBA_2056130). Also known as: cerebrospinal fluid bifunctional 3'-phosphoadenosine 5'-phosphosulfate synthase 1 (human) amount.