Artifacts in liquid-chromatographic assay of theophylline caused by acetonitrile deproteinization.
D000097:Acetonitriles; D011232:Chemical Precipitation; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006801:Humans; D000432:Methanol; D013806:Theophylline / Q000097:blood*
D000097:Acetonitriles; D013806:Theophylline; D000432:Methanol; C032159:acetonitrile