The amount of a phosphatidylinositol transfer protein beta isoform (human) when measured in cerebrospinal fluid. The trait is level of phosphatidylinositol transfer protein beta isoform (human) in cerebrospinal fluid (OBA_2057935, an Ontology of Biological Attributes identifier). Also known as: cerebrospinal fluid phosphatidylinositol transfer protein beta isoform (human) amount.