The amount of a leucine-rich repeat transmembrane neuronal protein 3 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes id OBA_2059588 (level of leucine-rich repeat transmembrane neuronal protein 3 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid leucine-rich repeat transmembrane neuronal protein 3 (human) amount.