Stable-isotope dilution measurement of isovalerylglycine by tandem mass spectrometry in newborn screening for isovaleric acidemia
Keywords: DBS, dried blood spots; ESI, electrospray ionization; GC-MS, gas chromatography–mass spectrometry; IVA, Isovaleric academia; IVG, isovalerylglycine; MRM, multiple-reaction monitoring; MS-MS, tandem mass spectrometry; PGA, pivalate-generating antibiotics;