The amount of a signal peptide, CUB and EGF-like domain-containing protein 1 (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes identifier OBA_2059689 (level of signal peptide, CUB and EGF-like domain-containing protein 1 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid signal peptide, CUB and EGF-like domain-containing protein 1 (human) amount.