Lena Kristoffersen
- Engineer; PhD
- +47 23013092
Publications 2023
Comparative Evaluation of Carboxyhemoglobin Quantification in Postmortem Whole Blood by CO-Oximetry and Headspace Gas Chromatography with Flame Ionization Detection and Atom Absorption Spectrophotometry
J Anal Toxicol, 47 (3), 311-316
DOI 10.1093/jat/bkac099, PubMed 36495201
Driving under the influence of zopiclone: Elimination between two consecutive blood samples
Forensic Sci Int, 349, 111764
DOI 10.1016/j.forsciint.2023.111764, PubMed 37352736
Publications 2021
Relationship between betahydroxybutyrate (BHB) and acetone concentrations in postmortem blood and cause of death
Forensic Sci Int, 321, 110726
DOI 10.1016/j.forsciint.2021.110726, PubMed 33631622
Frequency of postmortem ethanol formation in blood, urine and vitreous humor - Improving diagnostic accuracy with the use of ethylsulphate and putrefactive alcohols
Forensic Sci Int, 331, 111152
DOI 10.1016/j.forsciint.2021.111152, PubMed 34952291
Quantitative Determination of Ethyl Glucuronide and Ethyl Sulfate in Postmortem and Antemortem Whole Blood Using Phospholipid Removal 96-Well Plate and UHPLC-MS-MS
J Anal Toxicol, 45 (4), 378-388
DOI 10.1093/jat/bkaa108, PubMed 32816025
Publications 2018
Determination of 12 commonly found compounds in DUID cases in whole blood using fully automated supported liquid extraction and UHPLC-MS/MS
J Chromatogr B Analyt Technol Biomed Life Sci, 1093-1094, 8-23
DOI 10.1016/j.jchromb.2018.06.050, PubMed 29980102
Comparative Study of Postmortem Concentrations of Antidepressants in Several Different Matrices
J Anal Toxicol, 42 (7), 446-458
DOI 10.1093/jat/bky030, PubMed 29762694
Publications 2017
EtG and EtS in Autopsy Blood Samples With and Without Putrefaction Using UPLC-MS-MS
J Anal Toxicol, 41 (2), 107-113
DOI 10.1093/jat/bkw123, PubMed 27798076
Publications 2016
Ethanol elimination rates at low concentrations based on two consecutive blood samples
Forensic Sci Int, 266, 191-196
DOI 10.1016/j.forsciint.2016.05.039, PubMed 27295074
Publications 2015
Determination of safety margins for whole blood concentrations of alcohol and nineteen drugs in driving under the influence cases
Forensic Sci Int, 259, 119-26
DOI 10.1016/j.forsciint.2015.12.009, PubMed 26773222
Publications 2014
Quantitative determination of zopiclone and zolpidem in whole blood by liquid-liquid extraction and UHPLC-MS/MS
J Chromatogr B Analyt Technol Biomed Life Sci, 971, 72-80
DOI 10.1016/j.jchromb.2014.09.018, PubMed 25264915
Publications 2013
Quantitative determination of fifteen basic pharmaceuticals in ante- and post-mortem whole blood by high pH mobile phase reversed phase ultra high performance liquid chromatography-tandem mass spectrometry
J Chromatogr B Analyt Technol Biomed Life Sci, 927, 112-23
DOI 10.1016/j.jchromb.2012.12.039, PubMed 23380540
Has the intake of THC by cannabis users changed over the last decade? Evidence of increased exposure by analysis of blood THC concentrations in impaired drivers
Forensic Sci Int, 226 (1-3), 197-201
DOI 10.1016/j.forsciint.2013.01.017, PubMed 23415163
Publications 2009
[Drug testing in hair]
Tidsskr Nor Laegeforen, 129 (1), 36-8
DOI 10.4045/tidsskr.2009.0376, PubMed 19119295
Publications 2008
Prevalence of alcohol and drugs among Norwegian motor vehicle drivers: a roadside survey
Accid Anal Prev, 40 (5), 1765-72
DOI 10.1016/j.aap.2008.06.015, PubMed 18760106
Drug screening of hair by liquid chromatography-tandem mass spectrometry
J Anal Toxicol, 32 (5), 364-72
DOI 10.1093/jat/32.5.364, PubMed 18544222
Publications 2007
In vitro formation of ethanol in autopsy samples containing fluoride ions
Int J Legal Med, 122 (1), 63-6
DOI 10.1007/s00414-007-0166-6, PubMed 17387502
Publications 2006
Headspace gas chromatographic determination of ethanol: the use of factorial design to study effects of blood storage and headspace conditions on ethanol stability and acetaldehyde formation in whole blood and plasma
Forensic Sci Int, 161 (2-3), 151-7
DOI 10.1016/j.forsciint.2006.03.034, PubMed 16843627
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
J Chromatogr B Analyt Technol Biomed Life Sci, 850 (1-2), 147-60
DOI 10.1016/j.jchromb.2006.11.030, PubMed 17175206
Publications 2005
Fast quantification of ethanol in whole blood specimens by the enzymatic alcohol dehydrogenase method. Optimization by experimental design
J Anal Toxicol, 29 (1), 66-70
DOI 10.1093/jat/29.1.66, PubMed 15808017
An automated alcohol dehydrogenase method for ethanol quantification in urine and whole blood
J Anal Toxicol, 29 (5), 387-9
DOI 10.1093/jat/29.5.387, PubMed 16105266
Publications 2002
Simultaneous determination of citalopram, fluoxetine, paroxetine and their metabolites in plasma by temperature-programmed packed capillary liquid chromatography with on-column focusing of large injection volumes
J Chromatogr B Analyt Technol Biomed Life Sci, 766 (1), 77-87
DOI 10.1016/s0378-4347(01)00433-9, PubMed 11820298
Publications 1999
Simultaneous determination of citalopram, fluoxetine, paroxetine and their metabolites in plasma and whole blood by high-performance liquid chromatography with ultraviolet and fluorescence detection
J Chromatogr B Biomed Sci Appl, 734 (2), 229-46
DOI 10.1016/s0378-4347(99)00352-7, PubMed 10595721
Publications 1992
En teknisk/økonomisk studie av ulike metoder for redusertgassemisjon fr a SiC-produksjon
[Forfatterene], Kristiansand, 44 bl. + vedlegg
BIBSYS 941413756