Dag Helge Strand

676 total citations
16 papers, 547 citations indexed

About

Dag Helge Strand is a scholar working on Toxicology, Spectroscopy and Pharmacology. According to data from OpenAlex, Dag Helge Strand has authored 16 papers receiving a total of 547 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Toxicology, 5 papers in Spectroscopy and 4 papers in Pharmacology. Recurrent topics in Dag Helge Strand's work include Forensic Toxicology and Drug Analysis (16 papers), Analytical Chemistry and Chromatography (5 papers) and Cannabis and Cannabinoid Research (4 papers). Dag Helge Strand is often cited by papers focused on Forensic Toxicology and Drug Analysis (16 papers), Analytical Chemistry and Chromatography (5 papers) and Cannabis and Cannabinoid Research (4 papers). Dag Helge Strand collaborates with scholars based in Norway. Dag Helge Strand's co-authors include Thomas Berg, Elsa Lundanes, Asbjørg S. Christophersen, Sandra Rinne Dahl, Åse Marit Leere Øiestad, Vigdis Vindenes, Lena Kristoffersen, Jørg Mørland, Gudrun Høiseth and Jon Eigill Johansen and has published in prestigious journals such as Journal of Chromatography A, Journal of Chromatography B and Forensic Science International.

In The Last Decade

Dag Helge Strand

16 papers receiving 528 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Dag Helge Strand Norway 11 265 169 157 109 83 16 547
Thomas Berg Norway 12 235 0.9× 168 1.0× 168 1.1× 72 0.7× 80 1.0× 24 539
Yan Shi China 18 334 1.3× 175 1.0× 267 1.7× 73 0.7× 75 0.9× 76 796
Mário Dias Portugal 16 390 1.5× 154 0.9× 127 0.8× 93 0.9× 85 1.0× 30 644
Jörg Teske Germany 15 273 1.0× 197 1.2× 96 0.6× 186 1.7× 72 0.9× 37 678
Sylvain Dulaurent France 15 211 0.8× 108 0.6× 101 0.6× 83 0.8× 60 0.7× 38 763
Ashraf Mozayani United States 15 280 1.1× 126 0.7× 147 0.9× 99 0.9× 80 1.0× 38 646
Jin Young Kim South Korea 16 342 1.3× 168 1.0× 134 0.9× 129 1.2× 76 0.9× 53 681
Solfrid Hegstad Norway 16 237 0.9× 166 1.0× 108 0.7× 83 0.8× 63 0.8× 33 695
Giampietro Frison Italy 20 482 1.8× 256 1.5× 219 1.4× 165 1.5× 113 1.4× 48 929
Veniero Gambaro Italy 18 194 0.7× 124 0.7× 181 1.2× 243 2.2× 56 0.7× 60 782

Countries citing papers authored by Dag Helge Strand

Since Specialization
Citations

This map shows the geographic impact of Dag Helge Strand'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 Dag Helge Strand with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Dag Helge Strand more than expected).

Fields of papers citing papers by Dag Helge Strand

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Dag Helge Strand. 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 Dag Helge Strand. The network helps show where Dag Helge Strand may publish in the future.

Co-authorship network of co-authors of Dag Helge Strand

This figure shows the co-authorship network connecting the top 25 collaborators of Dag Helge Strand. A scholar is included among the top collaborators of Dag Helge Strand 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 Dag Helge Strand. Dag Helge Strand is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

16 of 16 papers shown
1.
Strand, Dag Helge, et al.. (2024). Enantiomer-specific analysis of amphetamine in urine, oral fluid and blood. Journal of Analytical Toxicology. 48(5). 254–262. 1 indexed citations
2.
3.
Øiestad, Åse Marit Leere, Sidsel Rogde, Ritva Karinen, et al.. (2018). Metabolites of Heroin in Several Different Post-mortem Matrices. Journal of Analytical Toxicology. 42(5). 311–320. 20 indexed citations
4.
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
5.
Bachs, Liliana, et al.. (2018). Detection Time of Oxazepam and Zopiclone in Urine and Oral Fluid after Experimental Oral Dosing. Journal of Analytical Toxicology. 43(5). 369–377. 4 indexed citations
6.
Høiseth, Gudrun, et al.. (2017). THC and CBD in blood samples and seizures in Norway: Does CBD affect THC-induced impairment in apprehended subjects?. Forensic Science International. 276. 12–17. 5 indexed citations
7.
Øiestad, Åse Marit Leere, et al.. (2016). Determination of 21 drugs in oral fluid using fully automated supported liquid extraction and UHPLC‐MS/MS. Drug Testing and Analysis. 9(5). 808–823. 47 indexed citations
8.
Vindenes, Vigdis, et al.. (2016). Detection of Nitrobenzodiazepines and Their 7-Amino Metabolites in Oral Fluid: Table I.. Journal of Analytical Toxicology. 40(4). 310–312. 6 indexed citations
9.
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
10.
Berg, Thomas, Morten Karlsen, Åse Marit Leere Øiestad, et al.. (2014). Evaluation of 13C- and 2H-labeled internal standards for the determination of amphetamines in biological samples, by reversed-phase ultra-high performance liquid chromatography–tandem mass spectrometry. Journal of Chromatography A. 1344. 83–90. 37 indexed citations
11.
Høiseth, Gudrun, Bente Fjeld, Margrete Larsen Burns, Dag Helge Strand, & Vigdis Vindenes. (2014). Long-term stability of morphine, codeine, and 6-acetylmorphine in real-life whole blood samples, stored at −20°C. Forensic Science International. 239. 6–10. 20 indexed citations
12.
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
13.
Berg, Thomas, et al.. (2013). Determination of Buprenorphine, Fentanyl and LSD in Whole Blood by UPLC-MS-MS. Journal of Analytical Toxicology. 37(3). 159–165. 24 indexed citations
14.
15.
Berg, Thomas & Dag Helge Strand. (2011). 13C labelled internal standards—A solution to minimize ion suppression effects in liquid chromatography–tandem mass spectrometry analyses of drugs in biological samples?. Journal of Chromatography A. 1218(52). 9366–9374. 128 indexed citations
16.
Berg, Thomas, Elsa Lundanes, Asbjørg S. Christophersen, & Dag Helge Strand. (2008). Determination of opiates and cocaine in urine by high pH mobile phase reversed phase UPLC–MS/MS. Journal of Chromatography B. 877(4). 421–432. 109 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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