The amount of a inactive tyrosine-protein kinase transmembrane receptor ROR1 (human) when measured in cerebrospinal fluid. The trait is level of inactive tyrosine-protein kinase transmembrane receptor ROR1 (human) in cerebrospinal fluid (Ontology of Biological Attributes identifier OBA_2058456). Also known as: cerebrospinal fluid inactive tyrosine-protein kinase transmembrane receptor ROR1 (human) amount.