Lena Kristoffersen

1.0k total citations
22 papers, 864 citations indexed

About

Lena Kristoffersen is a scholar working on Toxicology, Pathology and Forensic Medicine and Molecular Biology. According to data from OpenAlex, Lena Kristoffersen has authored 22 papers receiving a total of 864 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Toxicology, 11 papers in Pathology and Forensic Medicine and 9 papers in Molecular Biology. Recurrent topics in Lena Kristoffersen's work include Forensic Toxicology and Drug Analysis (14 papers), Alcohol Consumption and Health Effects (11 papers) and Metabolomics and Mass Spectrometry Studies (7 papers). Lena Kristoffersen is often cited by papers focused on Forensic Toxicology and Drug Analysis (14 papers), Alcohol Consumption and Health Effects (11 papers) and Metabolomics and Mass Spectrometry Studies (7 papers). Lena Kristoffersen collaborates with scholars based in Norway, Sweden and Germany. Lena Kristoffersen's co-authors include Anne Smith‐Kielland, Elsa Lundanes, Asbjørg S. Christophersen, Elisabeth Leere Øiestad, Andreas Bugge, Lars Slørdal, Jørg Mørland, Mette Krogh, Mimi Stokke Opdal and Solfrid Hegstad and has published in prestigious journals such as Accident Analysis & Prevention, Journal of Chromatography B and Forensic Science International.

In The Last Decade

Lena Kristoffersen

22 papers receiving 822 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Lena Kristoffersen Norway 13 393 229 221 207 191 22 864
Kari Ariniemi Finland 15 563 1.4× 200 0.9× 190 0.9× 283 1.4× 141 0.7× 22 995
Teemu Gunnar Finland 19 698 1.8× 207 0.9× 243 1.1× 276 1.3× 163 0.9× 39 1.2k
Kristof E. Maudens Belgium 23 509 1.3× 312 1.4× 262 1.2× 314 1.5× 219 1.1× 44 1.4k
Helena M. Teixeira Portugal 20 449 1.1× 145 0.6× 282 1.3× 155 0.7× 130 0.7× 52 1.2k
C. Jurado Spain 13 535 1.4× 127 0.6× 114 0.5× 232 1.1× 163 0.9× 31 943
Ioannis Papoutsis Greece 22 503 1.3× 215 0.9× 211 1.0× 217 1.0× 55 0.3× 84 1.4k
Klaas J. Lusthof Netherlands 17 517 1.3× 109 0.5× 138 0.6× 155 0.7× 130 0.7× 30 967
Jochen Beyer Australia 18 566 1.4× 126 0.6× 286 1.3× 200 1.0× 170 0.9× 39 1.2k
Gilbert Pépin Slovenia 21 693 1.8× 178 0.8× 154 0.7× 291 1.4× 103 0.5× 57 1.4k
Giampietro Frison Italy 20 482 1.2× 122 0.5× 165 0.7× 256 1.2× 113 0.6× 48 929

Countries citing papers authored by Lena Kristoffersen

Since Specialization
Citations

This map shows the geographic impact of Lena Kristoffersen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Lena Kristoffersen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Lena Kristoffersen more than expected).

Fields of papers citing papers by Lena Kristoffersen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Lena Kristoffersen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Lena Kristoffersen. The network helps show where Lena Kristoffersen may publish in the future.

Co-authorship network of co-authors of Lena Kristoffersen

This figure shows the co-authorship network connecting the top 25 collaborators of Lena Kristoffersen. A scholar is included among the top collaborators of Lena Kristoffersen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Lena Kristoffersen. Lena Kristoffersen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Bleka, Øyvind, et al.. (2023). Driving under the influence of zopiclone: Elimination between two consecutive blood samples. Forensic Science International. 349. 111764–111764. 1 indexed citations
2.
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Kronstrand, Robert, et al.. (2021). Frequency of postmortem ethanol formation in blood, urine and vitreous humor – Improving diagnostic accuracy with the use of ethylsulphate and putrefactive alcohols. Forensic Science International. 331. 111152–111152. 9 indexed citations
4.
Høiseth, Gudrun, et al.. (2021). Relationship between betahydroxybutyrate (BHB) and acetone concentrations in postmortem blood and cause of death. Forensic Science International. 321. 110726–110726. 7 indexed citations
5.
Kristoffersen, Lena, et al.. (2018). Determination of 12 commonly found compounds in DUID cases in whole blood using fully automated supported liquid extraction and UHPLC-MS/MS. Journal of Chromatography B. 1093-1094. 8–23. 31 indexed citations
6.
Høiseth, Gudrun, et al.. (2016). Ethanol elimination rates at low concentrations based on two consecutive blood samples. Forensic Science International. 266. 191–196. 7 indexed citations
7.
Hegstad, Solfrid, Lena Kristoffersen, Veronica Horpestad Liane, & Olav Spigset. (2016). EtG and EtS in Autopsy Blood Samples With and Without Putrefaction Using UPLC–MS-MS. Journal of Analytical Toxicology. 41(2). 107–113. 11 indexed citations
8.
Kristoffersen, Lena, Dag Helge Strand, Veronica Horpestad Liane, et al.. (2015). Determination of safety margins for whole blood concentrations of alcohol and nineteen drugs in driving under the influence cases. Forensic Science International. 259. 119–126. 10 indexed citations
9.
Kristoffersen, Lena, et al.. (2014). Quantitative determination of zopiclone and zolpidem in whole blood by liquid–liquid extraction and UHPLC-MS/MS. Journal of Chromatography B. 971. 72–80. 30 indexed citations
10.
Vindenes, Vigdis, Dag Helge Strand, Lena Kristoffersen, Fernando Boix, & Jørg Mørland. (2013). 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 Science International. 226(1-3). 197–201. 26 indexed citations
11.
12.
Hegstad, Solfrid, Lena Kristoffersen, Asbjørg S. Christophersen, & Hassan Z. Khiabani. (2009). Bestemmelse av legemidler og rusmidler i hår. Tidsskrift for Den norske legeforening. 129(1). 36–38. 1 indexed citations
13.
Hegstad, Solfrid, Hassan Z. Khiabani, Lena Kristoffersen, et al.. (2008). Drug Screening of Hair by Liquid Chromatography-Tandem Mass Spectrometry. Journal of Analytical Toxicology. 32(5). 364–372. 77 indexed citations
14.
Gjerde, Hallvard, Per T. Normann, Terje Assum, et al.. (2008). Prevalence of alcohol and drugs among Norwegian motor vehicle drivers: A roadside survey. Accident Analysis & Prevention. 40(5). 1765–1772. 99 indexed citations
15.
Høiseth, Gudrun, et al.. (2007). In vitro formation of ethanol in autopsy samples containing fluoride ions. International Journal of Legal Medicine. 122(1). 63–66. 29 indexed citations
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18.
Kristoffersen, Lena, et al.. (2005). Fast Quantification of Ethanol in Whole Blood Specimens by the Enzymatic Alcohol Dehydrogenase Method. Optimization by Experimental Design. Journal of Analytical Toxicology. 29(1). 66–70. 25 indexed citations
19.
Kristoffersen, Lena & Anne Smith‐Kielland. (2005). An Automated Alcohol Dehydrogenase Method for Ethanol Quantification in Urine and Whole Blood. Journal of Analytical Toxicology. 29(5). 387–389. 67 indexed citations
20.
Kristoffersen, Lena, Andreas Bugge, Elsa Lundanes, & Lars Slørdal. (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. Journal of Chromatography B Biomedical Sciences and Applications. 734(2). 229–246. 117 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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