title: Letter: Interference from serum separators in drug screening by gas chromatography.
mesh_terms: D002849:Chromatography, Gas; D005069:Evaluation Studies as Topic; D007202:Indicators and Reagents; D008722:Methods; D004364:Pharmaceutical Preparations / Q000097:blood*; D010881:Piperidones; D013696:Temperature
chemical_list: D007202:Indicators and Reagents; D004364:Pharmaceutical Preparations; D010881:Piperidones