The amount of a bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (human) when measured in cerebrospinal fluid. The trait is OBA_2081718 (level of bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid bifunctional UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (human) amount.