The amount of a 3-hydroxyisobutyryl-CoA hydrolase, mitochondrial (human) when measured in cerebrospinal fluid. The trait is level of 3-hydroxyisobutyryl-CoA hydrolase, mitochondrial (human) in cerebrospinal fluid (OBA_2059315). Also known as: cerebrospinal fluid 3-hydroxyisobutyryl-CoA hydrolase, mitochondrial (human) amount.