The amount of a 3-hydroxyisobutyrate dehydrogenase, mitochondrial (human) when measured in cerebrospinal fluid. The trait is OBA_2057645 (level of 3-hydroxyisobutyrate dehydrogenase, mitochondrial (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid 3-hydroxyisobutyrate dehydrogenase, mitochondrial (human) amount.