A. 苯酮尿症(Phenylketonuria; PKU)(96,106) i. Phenylalanine無法被代謝成Tyrosine(105,106),會被代謝成Phenylpyruvic acid(104,105) ii. phenylalaninenhydrolase缺乏(104,106) iii. iv. 可以用Guthrientest檢驗(104,106)Phenylalanine(快速半定量) 1. 需要bacillus subtilits進行bacterial inhibition assay v. 可以用螢光法檢驗Phenylalanine-ninhydrin-copperncomplex的形成(106)