The amount of a deoxynucleoside triphosphate triphosphohydrolase SAMHD1 (human) when measured in cerebrospinal fluid. The trait is level of deoxynucleoside triphosphate triphosphohydrolase SAMHD1 (human) in cerebrospinal fluid (OBA_2081797). Also known as: cerebrospinal fluid deoxynucleoside triphosphate triphosphohydrolase SAMHD1 (human) amount.