The amount of a hairy/enhancer-of-split related with YRPW motif protein 1 (human) when measured in cerebrospinal fluid. The trait is level of hairy/enhancer-of-split related with YRPW motif protein 1 (human) in cerebrospinal fluid (OBA_2081838). Also known as: cerebrospinal fluid hairy/enhancer-of-split related with YRPW motif protein 1 (human) amount.