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Detection time for THC in oral fluid after frequent cannabis smoking.
Andås HT, Krabseth HM, Enger A, Marcussen BN, Haneborg AM, Christophersen AS, Vindenes V, Øiestad EL. Andås HT, et al. Among authors: oiestad el. Ther Drug Monit. 2014 Dec;36(6):808-14. doi: 10.1097/FTD.0000000000000092. Ther Drug Monit. 2014. PMID: 24819969
Simultaneous determination of 6 beta-blockers, 3 calcium-channel antagonists, 4 angiotensin-II antagonists and 1 antiarrhythmic drug in post-mortem whole blood by automated solid phase extraction and liquid chromatography mass spectrometry. Method development and robustness testing by experimental design.
Kristoffersen L, Øiestad EL, Opdal MS, Krogh M, Lundanes E, Christophersen AS. Kristoffersen L, et al. Among authors: oiestad el. J Chromatogr B Analyt Technol Biomed Life Sci. 2007 May 1;850(1-2):147-60. doi: 10.1016/j.jchromb.2006.11.030. Epub 2006 Dec 18. J Chromatogr B Analyt Technol Biomed Life Sci. 2007. PMID: 17175206
Determination of digoxin and digitoxin in whole blood.
Oiestad EL, Johansen U, Stokke Opdal M, Bergan S, Christophersen AS. Oiestad EL, et al. J Anal Toxicol. 2009 Sep;33(7):372-8. doi: 10.1093/jat/33.7.372. J Anal Toxicol. 2009. PMID: 19796507
Comparison of zopiclone concentrations in oral fluid sampled with Intercept(®) oral specimen collection device and Statsure Saliva Sampler™ and concentrations in blood.
Gjerde H, Øiestad EL, Øiestad ÅM, Langødegård M, Gustavsen I, Hjelmeland K, Bernard JP, Christophersen AS. Gjerde H, et al. Among authors: oiestad el, oiestad am. J Anal Toxicol. 2010 Nov;34(9):590-3. doi: 10.1093/jat/34.9.590. J Anal Toxicol. 2010. PMID: 21073813 Clinical Trial.
Oral fluid is a viable alternative for monitoring drug abuse: detection of drugs in oral fluid by liquid chromatography-tandem mass spectrometry and comparison to the results from urine samples from patients treated with Methadone or Buprenorphine.
Vindenes V, Yttredal B, Oiestad EL, Waal H, Bernard JP, Mørland JG, Christophersen AS. Vindenes V, et al. Among authors: oiestad el. J Anal Toxicol. 2011 Jan;35(1):32-9. doi: 10.1093/anatox/35.1.32. J Anal Toxicol. 2011. PMID: 21219701
73 results