title: Quantitative analysis of albuterol in human plasma by combined gas chromatography chemical ionization mass spectrometry.
abstract: A highly sensitive and specific quantitative assay for the determination of albuterol in human plasma, based on selected ion monitoring gas chromatography chemical ionization mass spectrometry, has been developed. The [MH]+ ions from the tri-TMS derivatives of albuterol (m/z 456) and the internal standard (2H3)albuterol (m/z 459), were assayed simultaneously by selected ion monitoring. The lower limit of quantitation is 0.25 ng ml-1 and the average assay precision (CV) for albuterol concentrations ranging from 0.25 ng ml-1 to 25 ng ml-1 is approximately 4%. This method is currently being employed for the routine quantitation of albuterol in plasma following the administration of doses therapeutically effective to man.
mesh_terms: D000420:Albuterol / Q000097:blood*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006801:Humans
chemical_list: D000420:Albuterol