Christophersen AS - Search Results

1

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: christophersen as. J Anal Toxicol. 2011 Jan;35(1):32-9. doi: 10.1093/anatox/35.1.32. J Anal Toxicol. 2011. PMID: 21219701

2

Levels of ethyl glucuronide and ethyl sulfate in oral fluid, blood, and urine after use of mouthwash and ingestion of nonalcoholic wine.

Høiseth G, Yttredal B, Karinen R, Gjerde H, Christophersen A. Høiseth G, et al. J Anal Toxicol. 2010 Mar;34(2):84-8. doi: 10.1093/jat/34.2.84. J Anal Toxicol. 2010. PMID: 20223100 Clinical Trial.

3

Ethyl glucuronide concentrations in oral fluid, blood, and urine after volunteers drank 0.5 and 1.0 g/kg doses of ethanol.

Høiseth G, Yttredal B, Karinen R, Gjerde H, Mørland J, Christophersen A. Høiseth G, et al. J Anal Toxicol. 2010 Jul-Aug;34(6):319-24. doi: 10.1093/jat/34.6.319. J Anal Toxicol. 2010. PMID: 20663284

4

Comparison of the stability of stock solutions of drugs of abuse and other drugs stored in a freezer, refrigerator, and at ambient temperature for up to one year.

Karinen R, Øiestad EL, Andresen W, Smith-Kielland A, Christophersen A. Karinen R, et al. J Anal Toxicol. 2011 Oct;35(8):583-90. doi: 10.1093/anatox/35.8.583. J Anal Toxicol. 2011. PMID: 22004679

5

Drug screening of preserved oral fluid by liquid chromatography-tandem mass spectrometry.

Øiestad EL, Johansen U, Christophersen AS. Øiestad EL, et al. Among authors: christophersen as. Clin Chem. 2007 Feb;53(2):300-9. doi: 10.1373/clinchem.2006.074237. Epub 2006 Dec 7. Clin Chem. 2007. PMID: 17158196

6

Determination of digoxin and digitoxin in whole blood.

Oiestad EL, Johansen U, Stokke Opdal M, Bergan S, Christophersen AS. Oiestad EL, et al. Among authors: christophersen as. J Anal Toxicol. 2009 Sep;33(7):372-8. doi: 10.1093/jat/33.7.372. J Anal Toxicol. 2009. PMID: 19796507

7

Drug screening of whole blood by ultra-performance liquid chromatography-tandem mass spectrometry.

Oiestad EL, Johansen U, Oiestad AM, Christophersen AS. Oiestad EL, et al. Among authors: christophersen as. J Anal Toxicol. 2011 Jun;35(5):280-93. doi: 10.1093/anatox/35.5.280. J Anal Toxicol. 2011. PMID: 21619723

8

A Norwegian study of the suitability of hair samples in epidemiological research of alcohol, nicotine and drug use.

Lund HM, Gjerde H, de Courtade SM, Oiestad EL, Christophersen AS. Lund HM, et al. Among authors: christophersen as. J Anal Toxicol. 2013 Jul-Aug;37(6):362-8. doi: 10.1093/jat/bkt038. Epub 2013 May 19. J Anal Toxicol. 2013. PMID: 23689070

9

Determination of heroin and its main metabolites in small sample volumes of whole blood and brain tissue by reversed-phase liquid chromatography-tandem mass spectrometry.

Karinen R, Andersen JM, Ripel A, Hasvold I, Hopen AB, Mørland J, Christophersen AS. Karinen R, et al. Among authors: christophersen as. J Anal Toxicol. 2009 Sep;33(7):345-50. doi: 10.1093/jat/33.7.345. J Anal Toxicol. 2009. PMID: 19796503

10

Comparison of drug concentrations in blood and oral fluid collected with the Intercept sampling device.

Gjerde H, Mordal J, Christophersen AS, Bramness JG, Mørland J. Gjerde H, et al. Among authors: christophersen as. J Anal Toxicol. 2010 May;34(4):204-9. doi: 10.1093/jat/34.4.204. J Anal Toxicol. 2010. PMID: 20465866

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