title: Qualitative gas chromatographic and gas chromatographic-mass spectrometric screening for beta-blockers in urine after solid-phase extraction using Extrelut-1 columns.
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000493:pharmacokinetics / Q000652:urine*; D000818:Animals; D008401:Gas Chromatography-Mass Spectrometry; D006372:Helix, Snails / Q000201:enzymology; D006801:Humans; D007202:Indicators and Reagents
chemical_list: D000319:Adrenergic beta-Antagonists; D007202:Indicators and Reagents