Gamma aminobutyrate/Creatinine:Ratio:24H:Urine:Qn
gamma aminobutyrate/creatinine:ratio:24h:urine:qn
Gamma aminobutyrate/Creatinine:Ratio:24 hours:Urine:Quantitative
gamma aminobutyrate/creatinine:ratio:24 hours:urine:quantitative