The amount of a N(G),N(G)-dimethylarginine dimethylaminohydrolase 1 (human) when measured in cerebrospinal fluid. The trait is level of N(G),N(G)-dimethylarginine dimethylaminohydrolase 1 (human) in cerebrospinal fluid (OBA_2056437). Also known as: cerebrospinal fluid N(G),N(G)-dimethylarginine dimethylaminohydrolase 1 (human) amount.