title: Quantitation of ibuprofen in biological fluids by gas chromatography--mass spectrometry.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000097:blood / Q000188:drug therapy; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006801:Humans; D007052:Ibuprofen / Q000032:analysis* / Q000097:blood / Q000627:therapeutic use; D013582:Synovial Fluid / Q000032:analysis*
chemical_list: D007052:Ibuprofen