Tonje Gottenberg Skaalvik, Chen Zhou, Elisabeth Leere Øiestad, Solfrid Hegstad, Roger Trones, Stig Pedersen-Bjergaard
The use of oral fluid as sample matrix has gained significance in the analysis of drugs of abuse due to its non-invasive nature. In this study, the 13 opioids morphine, oxycodone, codeine, O-desmethyl tramadol, ethylmorphine, tramadol, pethidine, ketobemidone, buprenorphine, fentanyl, cyclopropylfentanyl, etonitazepyne, and methadone were extracted from oral fluid using electromembrane extraction based on conductive vials prior to analysis with ultra-high performance liquid chromatography-tandem mass spectrometry...
June 29, 2023: Analytical and Bioanalytical Chemistry