Metabolism, Inborn ErrorsAmino Acid Metabolism, Inborn ErrorsLipid Metabolism, Inborn ErrorsNeonatal ScreeningPurine-Pyrimidine Metabolism, Inborn ErrorsSteroid Metabolism, Inborn ErrorsCarbohydrate Metabolism, Inborn ErrorsUrea Cycle Disorders, InbornBrain Diseases, Metabolic, InbornArgininosuccinic AciduriaHyperammonemiaEnergy MetabolismLipid MetabolismPhenylketonuriasSmith-Lemli-Opitz SyndromeRefractive ErrorsInfant, NewbornHomogentisate 1,2-DioxygenaseHomocystinuriaCandidiasis, Chronic MucocutaneousPyruvate Metabolism, Inborn Errorsalpha-GalactosidaseFabry DiseaseAustralian Capital TerritoryOrnithine Carbamoyltransferase Deficiency DiseaseArgininosuccinic AcidMutationLiverIsovaleryl-CoA DehydrogenaseHypophosphatasiaMethylmalonic AcidDiagnostic ErrorsBrain Diseases, MetabolicHydroxocobalaminPentanoic AcidsMethylmalonyl-CoA MutaseOxidoreductases Acting on CH-CH Group DonorsCarnitineMetal Metabolism, Inborn ErrorsMetabolismFructose Metabolism, Inborn ErrorsGlutaratesMaple Syrup Urine DiseaseAmidinotransferasesMetabolic DiseasesGlucosePorphyria, ErythropoieticGlutaryl-CoA DehydrogenaseHyperargininemiaFailure to ThriveIron Metabolism DisordersMetabolic Networks and PathwaysLong-Chain-3-Hydroxyacyl-CoA DehydrogenaseAlkaptonuriaRare DiseasesCitrullinemiaMolecular Sequence DataMultiple Acyl Coenzyme A Dehydrogenase DeficiencyMucopolysaccharidosesModels, BiologicalAdenylosuccinate LyaseAcyl-CoA DehydrogenasePyruvate Dehydrogenase Complex Deficiency DiseaseLysosomal Storage DiseasesOrnithine-Oxo-Acid TransaminaseMagnetic Resonance SpectroscopyNeuroaxonal DystrophiesHyperoxaluria, PrimaryGenetic Diseases, InbornFatty AcidsPhenotypeMass SpectrometryHomozygotePedigreeTime FactorsRenal Tubular Transport, Inborn ErrorsBase SequenceArgininosuccinate LyaseBiotransformationGas Chromatography-Mass SpectrometryBrainFibroblastsUroporphyrinogen III SynthetaseOxidoreductasesTandem Mass SpectrometryOrnithineAmmoniaMicrosomes, LiverCytochrome P-450 Enzyme SystemReference ValuesPhlebotomyCritical PathwaysOxidation-ReductionBlood Specimen CollectionReproducibility of ResultsDiet, Protein-RestrictedCholesterolUreaPhenylalanine HydroxylaseConsanguinity