Publications 2024

Bergh MS, Bogen IL, Grafinger KE, Huestis MA, Øiestad ÅML (2024)
Metabolite markers for three synthetic tryptamines N-ethyl-N-propyltryptamine, 4-hydroxy-N-ethyl-N-propyltryptamine, and 5-methoxy-N-ethyl-N-propyltryptamine
Drug Test Anal (in press)
DOI 10.1002/dta.3668, PubMed 38459837

Heide G, Jamt REG, Fainberg-Sandbu J, Øiestad ÅML, Høiseth G (2024)
Driving under the influence of cocaine and MDMA: Relationship between blood concentrations and results from clinical test of impairment
J Anal Toxicol, 48 (5), 380-387
DOI 10.1093/jat/bkae024, PubMed 38613441

Publications 2023

Schüller M, Lucic I, Øiestad ÅML, Pedersen-Bjergaard S, Øiestad EL (2023)
High-throughput quantification of emerging "nitazene" benzimidazole opioid analogs by microextraction and UHPLC-MS-MS
J Anal Toxicol, 47 (9), 787-796
DOI 10.1093/jat/bkad071, PubMed 37700512

Øiestad EL, Øiestad ÅML, Middelkoop G, Brochmann GW, Thaulow CH, Vindenes V (2023)
Comparative Study of Postmortem Concentrations of Benzodiazepines and Z-Hypnotics in Several Different Matrices
J Anal Toxicol, 47 (3), 287-298
DOI 10.1093/jat/bkac106, PubMed 36542823

Publications 2022

Havig SM, Vindenes V, Øiestad ÅML, Rogde S, Thaulow CH (2022)
Methadone, Buprenorphine, Oxycodone, Fentanyl and Tramadol in Multiple Postmortem Matrices
J Anal Toxicol, 46 (6), 600-610
DOI 10.1093/jat/bkab071, PubMed 34115841

Vevelstad MS, Øiestad ÅML, Johansen U, von Krogh A, Torp HA (2022)
[Yew – a toxic shrub veiled in myth with medical potential]
Tidsskr Nor Laegeforen, 142 (6)
DOI 10.4045/tidsskr.22.0033, PubMed 35383451

Publications 2021

Bergh MSS, Bogen IL, Nerem E, Wohlfarth A, Wilson SR, Oiestad AML (2021)
Discovering the major metabolites of the three novel fentanyl analogues 3-methylcrotonylfentanyl, furanylbenzylfentanyl, and 4-fluorocyclopropylbenzylfentanyl for forensic case work
Forensic Toxicol., 39 (1), 167-178
DOI 10.1007/s11419-020-00560-9

Pettersen S, Øiestad ÅML, Rogde S, Brochmann GW, Øiestad EL, Vindenes V (2021)
Distribution of tetrahydrocannabinol and cannabidiol in several different postmortem matrices
Forensic Sci Int, 329, 111082
DOI 10.1016/j.forsciint.2021.111082, PubMed 34775328

Publications 2020

Bergh MS, Øiestad ÅML, Baumann MH, Bogen IL (2020)
Selectivity and sensitivity of urine fentanyl test strips to detect fentanyl analogues in illicit drugs
Int J Drug Policy, 90, 103065
DOI 10.1016/j.drugpo.2020.103065, PubMed 33333419

Heide G, Høiseth G, Middelkoop G, Øiestad ÅML (2020)
Blood Concentrations of Designer Benzodiazepines: Relation to Impairment and Findings in Forensic Cases
J Anal Toxicol, 44 (8), 905-914
DOI 10.1093/jat/bkaa043, PubMed 32369173

Publications 2019

Bergh MS, Bogen IL, Wohlfarth A, Wilson SR, Øiestad ÅML (2019)
Distinguishing Between Cyclopropylfentanyl and Crotonylfentanyl by Methods Commonly Available in the Forensic Laboratory
Ther Drug Monit, 41 (4), 519-527
DOI 10.1097/FTD.0000000000000617, PubMed 30807539

Publications 2018

Bergh MS, Bogen IL, Wilson SR, Øiestad ÅML (2018)
Addressing the Fentanyl Analogue Epidemic by Multiplex UHPLC-MS/MS Analysis of Whole Blood
Ther Drug Monit, 40 (6), 738-748
DOI 10.1097/FTD.0000000000000564, PubMed 30157097

Høiseth G, Arnestad M, Karinen R, Morini L, Rogde S, Sempio C, Vindenes V, Øiestad ÅML (2018)
Is Hair Analysis Useful in Postmortem Cases?
J Anal Toxicol, 42 (1), 49-54
DOI 10.1093/jat/bkx077, PubMed 28977558

Mardal M, Johansen SS, Davidsen AB, Telving R, Jornil JR, Dalsgaard PW, Hasselstrøm JB, Øiestad ÅM, Linnet K, Andreasen MF (2018)
Postmortem analysis of three methoxyacetylfentanyl-related deaths in Denmark and in vitro metabolite profiling in pooled human hepatocytes
Forensic Sci Int, 290, 310-317
DOI 10.1016/j.forsciint.2018.07.020, PubMed 30107329

Oiestad AML, Berg T, Eliassen E, Wiklund T, Sand K, Oiestad EL (2018)
Separation of isomers of new psychoactive substances and isotope-labeled amphetamines using UHPSFC-MS/MS and UHPLC-MS/MS
J. Liq. Chromatogr. Relat. Technol., 41 (7), 391-400
DOI 10.1080/10826076.2017.1388818

Thaulow CH, Øiestad ÅML, Rogde S, Andersen JM, Høiseth G, Handal M, Mørland J, Vindenes V (2018)
Can measurements of heroin metabolites in post-mortem matrices other than peripheral blood indicate if death was rapid or delayed?
Forensic Sci Int, 290, 121-128
DOI 10.1016/j.forsciint.2018.06.041, PubMed 30015276

Thaulow CH, Øiestad ÅML, Rogde S, Karinen R, Brochmann GW, Andersen JM, Høiseth G, Handal M, Mørland J, Arnestad M, Øiestad EL, Strand DH, Vindenes V (2018)
Metabolites of Heroin in Several Different Post-mortem Matrices
J Anal Toxicol, 42 (5), 311-320
DOI 10.1093/jat/bky002, PubMed 29409037

Vårdal L, Wong G, Øiestad ÅML, Pedersen-Bjergaard S, Gjelstad A, Øiestad EL (2018)
Rapid determination of designer benzodiazepines, benzodiazepines, and Z-hypnotics in whole blood using parallel artificial liquid membrane extraction and UHPLC-MS/MS
Anal Bioanal Chem, 410 (20), 4967-4978
DOI 10.1007/s00216-018-1147-y, PubMed 29947895

Øiestad ÅML, Karinen R, Rogde S, Nilsen S, Boye Eldor KB, Brochmann GW, Arnestad M, Øiestad EL, Peres MD, Kristoffersen L, Vindenes V (2018)
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

Bergh MS, Bogen IL, Andersen JM, Øiestad ÅML, Berg T (2017)
Determination of adrenaline, noradrenaline and corticosterone in rodent blood by ion pair reversed phase UHPLC-MS/MS
J Chromatogr B Analyt Technol Biomed Life Sci, 1072, 161-172
DOI 10.1016/j.jchromb.2017.11.016, PubMed 29175696

Hjelmeland K, Gustavsen I, Øiestad EL, Øiestad ÅML, Høiseth G, Mørland J (2017)
Zopiclone concentrations in oral fluid and blood after, administration of therapeutic doses of zopiclone
Forensic Sci Int, 278, 177-183
DOI 10.1016/j.forsciint.2017.07.004, PubMed 28735217

Øiestad EL, Karinen RA, Haugland K, Øiestad ML (2017)
Chapter 101 Screening of Synthetic Cannabinoids
In Handbook of Cannabis and Related Pathologies (Victor R. Preedy, ed.), Academic Press, San Diego, 1, 981-997
DOI 10.1016/B978-0-12-800756-3.00118-6, PublikaID 291, ISBN 978-0-12-800756-3

Publications 2016

Andås HT, Enger A, Øiestad ÅM, Vindenes V, Christophersen AS, Huestis MA, Øiestad EL (2016)
Extended Detection of Amphetamine and Methamphetamine in Oral Fluid
Ther Drug Monit, 38 (1), 114-9
DOI 10.1097/FTD.0000000000000248, PubMed 26402425

Bergh MS, Bogen IL, Lundanes E, Øiestad ÅML (2016)
Validated methods for determination of neurotransmitters and metabolites in rodent brain tissue and extracellular fluid by reversed phase UHPLC-MS/MS
J Chromatogr B Analyt Technol Biomed Life Sci, 1028, 120-129
DOI 10.1016/j.jchromb.2016.06.011, PubMed 27336704

Høiseth G, Berg-Hansen GO, Øiestad ÅM, Bachs L, Mørland J (2016)
Impairment due to alcohol, tetrahydrocannabinol, and benzodiazepines in impaired drivers compared to experimental studies
Traffic Inj Prev, 18 (3), 244-250
DOI 10.1080/15389588.2016.1201205, PubMed 27327554

Valen A, Leere Øiestad ÅM, Strand DH, Skari R, Berg T (2016)
Determination of 21 drugs in oral fluid using fully automated supported liquid extraction and UHPLC-MS/MS
Drug Test Anal, 9 (5), 808-823
DOI 10.1002/dta.2045, PubMed 27464485

Øiestad EL, Øiestad ÅM, Gjelstad A, Karinen R (2016)
Oral fluid drug analysis in the age of new psychoactive substances
Bioanalysis, 8 (7), 691-710
DOI 10.4155/bio-2015-0027, PubMed 26964619

Publications 2014

Berg T, Karlsen M, Oiestad AM, Johansen JE, Liu H, Strand DH (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
J Chromatogr A, 1344, 83-90
DOI 10.1016/j.chroma.2014.04.020, PubMed 24780257

Karinen R, Tuv SS, Rogde S, Peres MD, Johansen U, Frost J, Vindenes V, Øiestad ÅM (2014)
Lethal poisonings with AH-7921 in combination with other substances
Forensic Sci Int, 244, e21-4
DOI 10.1016/j.forsciint.2014.08.013, PubMed 25216892

Publications 2013

Amundsen I, Oiestad ÅM, Ekeberg D, Kristoffersen L (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

Publications 2011

Oiestad EL, Johansen U, Oiestad AM, Christophersen AS (2011)
Drug screening of whole blood by ultra-performance liquid chromatography-tandem mass spectrometry
J Anal Toxicol, 35 (5), 280-93
DOI 10.1093/anatox/35.5.280, PubMed 21619723

Sauve EN, Langødegård M, Ekeberg D, Øiestad AM (2011)
Determination of benzodiazepines in ante-mortem and post-mortem whole blood by solid-supported liquid-liquid extraction and UPLC-MS/MS
J Chromatogr B Analyt Technol Biomed Life Sci, 883-884, 177-88
DOI 10.1016/j.jchromb.2011.10.033, PubMed 22119506

Publications 2010

Gjerde H, Øiestad EL, Øiestad ÅM, Langødegård M, Gustavsen I, Hjelmeland K, Bernard JP, Christophersen AS (2010)
Comparison of zopiclone concentrations in oral fluid sampled with Intercept(®) oral specimen collection device and Statsure Saliva Sampler™ and concentrations in blood
J Anal Toxicol, 34 (9), 590-3
DOI 10.1093/jat/34.9.590, PubMed 21073813

Publications 2005

Nielsen SB, Øiestad ML, Bojesen G, Uggerud E (2005)
Binding of molecular oxygen and alkenes to coordinatively unsaturated bipyridinium metal complexes int the gas phase
International Journal of Mass Spectrometry , 243, p 231-239
PublikaID 452

Publications 2001

Øiestad ML (2001)
Reactions of protonated molecules and cationic metal clusters studied in the gas phase
Unipub forlag, 108 s
PublikaID 451

Øiestad ML, Petersen AC, Bakken V, Vedde J, Uggerud E (2001)
The oxidative power of protonated hydrogen peroxide
Angewandte Chemie, 113, p. 1345-1349
PublikaID 450

Publications 2000

Øiestad ML, Uggerud E (2000)
Mediatiors for hydrogenation of carbon monoxide: theoretical study of addition of H2 to HCO+ in the presence of CO or H2O
International Journal of Mass Spectrometry , 201, p. 179-185
PublikaID 448

Øiestad ML, Uggerud E (2000)
Gas phase reactivity of small cationic cobalt clusters towards methanol
Chemical Physics , 262, p. 169-177
PublikaID 449

Publications 1997

Øiestad ML, Uggerud E (1997)
Loss of H2 from CH2NH2+ and NHNH2+. Reaction mechanisms and dynamics from observation of metastable ion fragmentations and ab initio calculations
International Journal of Mass Spectrometry and Ion Processes, 167/168, p 117-126
PublikaID 447

Publications 1995

Øiestad EL, Øiestad ML, Skaane H, Ruud K, Helgaker T, Uggerud E (1995)
Loss of H-2 from CH3NH3+, CH3OH2+ and CH3FH+ - Reaction-Mechanisms and Dynamics from Observation of Metastable Ion Fragmentations and Ab-Initio Calculations Reaction-Mechanisms
Europeamn Mass Spectrometry, 1 (2), 121-129
PublikaID 366