title: Determination of heterozygosity for phenylketonuria on the amino acid analyzer.
mesh_terms: D001322:Autoanalysis; D002021:Buffers; D002648:Child; D006579:Heterozygote; D006801:Humans; D008722:Methods; D008875:Middle Aged; D010649:Phenylalanine / Q000097:blood*; D010661:Phenylketonurias / Q000097:blood*; D014443:Tyrosine / Q000097:blood*
chemical_list: D002021:Buffers; D014443:Tyrosine; D010649:Phenylalanine