
Keywords: نقص چرخه اوره; OTC; ornithine transcarbamylase; GC-MS; gas chromatography coupled to mass spectrometry; DBS; dried blood spots; UCD; urea cycle defects; IS; internal standard; adeno-associated virus 2/serotype 8; AAV2/8; OTC; GC-MS; Dried blood spots; Orotic aciduri