The amount of a glyceraldehyde-3-phosphate dehydrogenase, testis-specific (human) when measured in cerebrospinal fluid. The trait is OBA_2055985 (level of glyceraldehyde-3-phosphate dehydrogenase, testis-specific (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid glyceraldehyde-3-phosphate dehydrogenase, testis-specific (human) amount.