The amount of a transmembrane and ubiquitin-like domain-containing protein 1 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes term OBA_2080749 (level of transmembrane and ubiquitin-like domain-containing protein 1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid transmembrane and ubiquitin-like domain-containing protein 1 (human) amount.