The amount of a sterol-4-alpha-carboxylate 3-dehydrogenase, decarboxylating (human) when measured in cerebrospinal fluid. The trait is level of sterol-4-alpha-carboxylate 3-dehydrogenase, decarboxylating (human) in cerebrospinal fluid (OBA_2058941). Also known as: cerebrospinal fluid sterol-4-alpha-carboxylate 3-dehydrogenase, decarboxylating (human) amount.