The amount of a O-phosphoseryl-tRNA(Sec) selenium transferase (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes entry OBA_2081111 (level of O-phosphoseryl-tRNA(Sec) selenium transferase (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid O-phosphoseryl-tRNA(Sec) selenium transferase (human) amount.