The amount of a guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-12 (human) when measured in cerebrospinal fluid. The trait is OBA_2081435 (level of guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-12 (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-12 (human) amount.