Figure 1: LC-MS/MS total ion chromatogram resulting from analysis of clean tissue spiked with a mixture of pharmaceutical standards. Peak identifications are as follows: (1) acetaminophen-d4, (2) acetaminophen, (3) atenolol, (4) cimetidine, (5) codeine, (6) 1,7-dimethylxanthine, (7) lincomycin, (8) trimethoprim, (9) thiabendazole, (10) caffeine, (11) sulfamethoxazole, (12) 7-aminoflunitrazepam-d7 (+IS), (13) metoprolol, (14) propranolol, (15) diphenhydramine- d3, (16) diphenhydramine, (17) diltiazem, (18) carbamazepine-d10, (19) carbamazepine, (20) tylosin, (21) fluoxetine-d6, (22) fluoxetine, (23) norfluoxetine, (24) sertraline, (25) erythromycin, (26) clofibric acid, (27) warfarin, (28) miconazole, (29) ibuprofen-13C3, (30) ibuprofen, (31) meclofenamic acid (-IS), and (32) gemfibrozil. (Reproduced with permission from (64), © American Chemical Society).