title: Current status of biopterin screening.
mesh_terms: D001708:Biopterins / Q000031:analogs & derivatives / Q000172:deficiency*; D002851:Chromatography, High Pressure Liquid; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008403:Mass Screening; D019798:Neopterin; D010649:Phenylalanine / Q000097:blood; D010661:Phenylketonurias / Q000175:diagnosis; D011621:Pteridines / Q000172:deficiency*
chemical_list: D011621:Pteridines; D001708:Biopterins; D010649:Phenylalanine; D019798:Neopterin; C003402:sapropterin