The amount of a branched-chain-amino-acid aminotransferase, mitochondrial (human) when measured in cerebrospinal fluid. The trait is level of branched-chain-amino-acid aminotransferase, mitochondrial (human) in cerebrospinal fluid (OBA_2056094). Also known as: cerebrospinal fluid branched-chain-amino-acid aminotransferase, mitochondrial (human) amount.