Abstract: Analysis of Abnormal Metabolite of Urine of Phenylketonur by GC/MSLiu Ling;Han Haisheng;He Liping;Qiu Shuyun(Tianjin Medical University,Tianjin 300070,China)Received Abstract:A high content of abnormal metabolite of phenylalanine was found by GC/MS quantitative estimate of urine of PKU in sieving examination of newborn baby with hereditary matabolic disease.Keywords:phenylketonur,organic acid,GC/MS,sieving examination of newborn baby