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This study presents the simultaneous extraction and determination of lincomycin (LCM) and narasin (NAR) by using liquid chromatography–electrospray ionisation tandem mass spectrometry (LC–MS/MS) on samples from poultry, milk and eggs (n=196). The homogenised samples are extracted with acetonitrile and the extract is further cleaned using C 18 solid-phase extraction cartridges. The recoveries...