The amount of a SH3 and multiple ankyrin repeat domains protein 1 (human) when measured in cerebrospinal fluid. The trait is level of SH3 and multiple ankyrin repeat domains protein 1 (human) in cerebrospinal fluid (Ontology of Biological Attributes id OBA_2081823). Also known as: cerebrospinal fluid SH3 and multiple ankyrin repeat domains protein 1 (human) amount.