The amount of a nuclear receptor subfamily 1 group D member 1 (human) when measured in cerebrospinal fluid. The trait is level of nuclear receptor subfamily 1 group D member 1 (human) in cerebrospinal fluid (OBA_2057348, an Ontology of Biological Attributes id). Also known as: cerebrospinal fluid nuclear receptor subfamily 1 group D member 1 (human) amount.