2025

• Rognstad, Stine; Søraas, Camilla Lund; Brunborg, Cathrine; Halvorsen, Lene Vernås; Brobak, Karl Marius; Olsen, Eirik; Bergland, Ola Undrum; Aune, Arleen; Tuv, Silja Skogstad; Svarstad, Anja Camilla. (2025) Pharmacokinetic Variability of Amlodipine Serum Concentration and Effect on Blood Pressure in Patients Treated for Hypertension. Pharmacology Research & Perspectives
  Academic article
• Spigset, Olav; Krabseth, Hege-Merete; Strømmen, Magnus; Helland, Arne. (2025) Effect of Bariatric Surgery on the Pharmacokinetics of Codeine, Oxycodone and Tramadol—A Case Series. Basic & Clinical Pharmacology & Toxicology
  Academic article
• Schoretsanitis, Georgios; Krabseth, Hege-Merete; Strømmen, Magnus; Helland, Arne; Spigset, Olav. (2025) Effects of sleeve gastrectomy and Roux-en-Y gastric bypass on the pharmacokinetics of gabapentin and pregabalin: A cohort study. PLOS ONE
  Academic article

2024

• Helland, Arne; Muller, Sébastien; Spigset, Olav; Krabseth, Hege-Merete; Hansen, Miriam; Skråstad, Ragnhild Bergene. (2024) Drug detection in oral fluid and urine after single therapeutic doses of dexamphetamine, lisdexamphetamine, and methylphenidate in healthy volunteers. Journal of Analytical Toxicology
  Academic article
• Aakerøy, Rachel; Loennechen, Jan Pål; Dyrkorn, Roar; Lydersen, Stian; Helland, Arne; Spigset, Olav. (2024) Apixaban plasma concentrations before and after catheter ablation for atrial fibrillation. PLOS ONE
  Academic article
• Schoretsanitis, Georgios; Strømmen, Magnus; Krabseth, Hege-Merete; Spigset, Olav; Helland, Arne. (2024) Effects of sleeve gastrectomy and Roux-en-Y gastric bypass on pharmacokinetics of lamotrigine and valproate: A cohort study. Epilepsy Research
  Academic article
• Krabseth, Hege-Merete; Strømmen, Magnus; Helland, Arne; Spigset, Olav. (2024) Effect of bariatric surgery on the pharmacokinetics of drugs used for attention-deficit hyperactivity disorder—A case series. Basic & Clinical Pharmacology & Toxicology
  Academic article

2023

• Schoretsanitis, Georgios; Strømmen, Magnus; Krabseth, Hege-Merete; Helland, Arne; Spigset, Olav. (2023) Effects of Sleeve Gastrectomy and Roux-en-Y Gastric Bypass on Escitalopram Pharmacokinetics: A Cohort Study. Therapeutic Drug Monitoring
  Academic article
• Aakerøy, Rachel; Gynnild, Mari Nordbø; Løfblad, Lena; Dyrkorn, Roar; Ellekjær, Hanne; Lydersen, Stian; Helland, Arne; Spigset, Olav. (2023) Direct oral anticoagulant concentrations and adherence in stroke patients. Basic & Clinical Pharmacology & Toxicology
  Academic article
• Thaulow, Cecilie Hasselø; Helland, Arne; Kongsgaard, Ulf Erik; Høiseth, Gudrun. (2023) Oxycodone, Morphine, and Fentanyl in Patients with Chronic Pain: Proposal of Dose-Specific Concentration Ranges. Therapeutic Drug Monitoring
  Academic article
• Mjølstad, Ole Christian; Radtke, Maria Anita; Brodtkorb, Eylert; Edvardsen, Frode; Rødseth, Brede Wenche; Aamo, Trond Oskar; Jacobsen, Dag; Stokke, Mathis Korseberg; Helland, Arne. (2023) Recurrent malignant ventricular arrhythmias and paresthesia—a mystery revealed as aconitine poisoning: a case report. Journal of Medical Case Reports
  Professional article

2022

• Frost, Joachim; Helland, Arne; Syrstad, Vigdis Elin Giæver; Aamo, Trond Oskar. (2022) Illegalt eller medisinsk amfetamin – hva er inntatt. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Aakerøy, Rachel; Stokes, Charlotte Lorentze; Tomic, Marija; Hegstad, Solfrid; Kristoffersen, Ann-Helen; Ellekjær, Hanne; Schjøtt, Jan Didrik; Spigset, Olav; Helland, Arne. (2022) Serum or Plasma for Quantification of Direct Oral Anticoagulants?. Therapeutic Drug Monitoring
  Academic article

2021

• Hegstad, Solfrid; Fuskevåg, Ole Martin; Amundsen, Siri; Gule, Marina; Spigset, Olav; Helland, Arne. (2021) Stability of Direct Oral Anticoagulants and Antiarrhythmic Drugs in Serum Collected in Standard (Nongel) Serum Tubes Versus Tubes Containing Gel Separators. Therapeutic Drug Monitoring
  Academic article

2020

• Rognstad, Stine; Søraas, Camilla Lund; Bergland, Ola Undrum; Høieggen, Aud; Strømmen, Magnus; Helland, Arne; Opdal, Mimi Stokke. (2020) Establishing Serum Reference Ranges for Antihypertensive Drugs. Therapeutic Drug Monitoring
  Academic article
• Krabseth, Hege-Merete; Strømmen, Magnus; Spigset, Olav; Helland, Arne. (2020) Effect of sleeve gastrectomy on buprenorphine pharmacokinetics: A planned case observation. Clinical Therapeutics
  Academic article

2019

• Frost, Joachim; Bernard, Jean-Paul Anthony; Dietrichs, Erik Sveberg; Kjeldstadli, Kari Grandaunet; Riedel, Bettina; Skråstad, Ragnhild Bergene; Vevelstad, Merete; Helland, Arne. (2019) Nye anbefalinger ved serumkonsentrasjonsmålinger av sentralstimulerende legemidler. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Commentary
• Hegstad, Solfrid; Spigset, Olav; Helland, Arne. (2019) Stability of 21 Antihypertensive Drugs in Serum Collected in Standard (Non-Gel) Serum Tubes versus Tubes Containing a Gel Separator. Therapeutic Drug Monitoring
  Academic article

2018

• Hegstad, Solfrid; Havnen, Hilde; Helland, Arne; Spigset, Olav; Frost, Joachim. (2018) Enantiomeric separation and quantification of R/S-amphetamine in urine by ultra-high performance supercritical fluid chromatography tandem mass spectrometry. Journal of chromatography. B
  Academic article
• Gundersen, Per Ole Mobråten; Helland, Arne; Spigset, Olav; Hegstad, Solfrid. (2018) Quantification of 21 antihypertensive drugs in serum using UHPLC-MS/MS. Journal of chromatography. B
  Academic article
• Helland, Arne; Habib, Simone; Ulvestad, Line; Spigset, Olav. (2018) Systemic inflammation complicates the interpretation of therapeutic drug monitoring of risperidone. Journal of Clinical Psychopharmacology
  Commentary

2017

• Hegstad, Solfrid; Helland, Arne; Hagemann, Cecilie Therese; Spigset, Olav. (2017) EtG/EtS in Serum by UHPLC-MS-MS in Suspected Sexual Assault Cases. Journal of Analytical Toxicology
  Academic article
• Helland, Arne; Brede, Wenche Rødseth; Michelsen, Lisbeth Solem; Gundersen, Per Ole Mobråten; Aarset, Harald; Skjølås, Jan Erik; Slørdal, Lars. (2017) Two Hospitalizations and One Death After Exposure to Ortho-Fluorofentanyl. Journal of Analytical Toxicology
  Academic article
• Helland, Arne; Spigset, Olav. (2017) Serum concentrations of paliperidone after administration of the long-acting injectable formulation. Therapeutic Drug Monitoring
  Academic article
• Hegstad, Solfrid; Havnen, Hilde; Helland, Arne; Falch, Berit Margrethe Hasle; Spigset, Olav. (2017) Enantiomeric separation and quantification of citalopram in serum by ultra-high performance supercritical fluid chromatography-tandem mass spectrometry. Journal of chromatography. B
  Academic article

2016

• Helland, Arne; Jenssen, Gunnar; Lervåg, Lone-Eirin; Moen, Terje; Engen, Thomas; Lydersen, Stian; Mørland, Jørg; Slørdal, Lars. (2016) Evaluation of measures of impairment in real and simulated driving: Results from a randomized, placebo-controlled study. Traffic Injury Prevention
  Academic article
• Helland, Arne; Lydersen, Stian; Lervåg, Lone-Eirin; Jenssen, Gunnar; Mørland, Jørg; Slørdal, Lars. (2016) Driving simulator sickness: Impact on driving performance, influence of blood alcohol concentration, and effect of repeated simulator exposures. Accident Analysis and Prevention
  Academic article
• Edvardsen, Frode; Øien, Cecilia Margareta Montgomery; Helland, Arne. (2016) Serumkonsentrasjonsmåling av blodtrykksmedisiner ved behandlingsresistent hypertensjon. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Commentary
• Helland, Arne; Berg, Jon Andsnes; Gustavsen, Ingebjørg G.; Nordal, Kristin; Hilberg, Thor; Aronsen, Lena; Arnestad, Marianne; Narum, Sigrid. (2016) Serumkonsentrasjonsmålinger av vanedannende legemidler. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Commentary
• Frost, Joachim; Løkken, Trine Nordgård; Helland, Arne; Nordrum, Ivar Skjåk; Slørdal, Lars. (2016) Post-mortem levels and tissue distribution of codeine, codeine-6-glucuronide, norcodeine, morphine and morphine glucuronides in a series of codeine-related deaths. Forensic Science International
  Academic article
• Strømmen, Magnus; Helland, Arne; Kulseng, Bård Eirik; Spigset, Olav. (2016) Increased bioavailability of methadone following sleeve gastrectomy - a planned case observation. Clinical Therapeutics
  Academic article
• Aakerøy, Rachel; Skråstad, Ragnhild; Helland, Arne; Hilberg, Thor; Aamo, Trond Oskar; Dyrkorn, Roar; Spigset, Olav. (2016) Nye markører for påvisning av alkoholbruk. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article

2015

• Helland, Arne; Syrstad, Vigdis Elin; Spigset, Olav. (2015) Prolonged elimination of paliperidone after administration of paliperidone palmitate depot injections. Journal of Clinical Psychopharmacology
  Commentary

2013

• Persheim, Marthe Sæther; Helland, Arne; Slørdal, Lars; Spigset, Olav. (2013) Potensielt vanedannende legemidler på blåresept ved kroniske sterke smerter. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic article
• Hagemann, Cecilie Therese; Helland, Arne; Spigset, Olav; Espnes, Ketil Arne; Ormstad, Kari; Schei, Berit. (2013) Ethanol and drug findings in women consulting a Sexual Assault Center - Associations with clinical characteristics and suspicions of drug-facilitated sexual assault. Journal of Forensic and Legal Medicine
  Academic article
• Helland, Arne; Syrstad, Vigdis Elin Giæver; Spigset, Olav. (2013) Prolonged Elimination Time of Paliperidone After Administration of Paliperidone Palmitate Depot Injections. Therapeutic Drug Monitoring
  Conference abstract
• Hegstad, Solfrid; Helland, Arne; Hagemann, Cecilie Therese; Michelsen, Lisbeth Solem; Spigset, Olav. (2013) EtG/EtS in Urine from Sexual Assault Victims Determined by UPLC-MS-MS. Journal of Analytical Toxicology
  Academic article
• Helland, Arne; Jenssen, Gunnar Deinboll; Lervåg, Lone-Eirin; Westin, Andreas Austgulen; Moen, Terje; Sakshaug, Kristian; Lydersen, Stian; Mørland, Jørg; Slørdal, Lars. (2013) Comparison of driving simulator performance with real driving after alcohol intake: A randomised, single blind, placebo-controlled, cross-over trial. Accident Analysis and Prevention
  Academic article
• Jenssen, Gunnar Deinboll; Lervåg, Lone-Eirin; Lydersen, Stian; Helland, Arne. (2013) ASSESSING THE EFFECTS OF ALCOHOL AND DRUGS ON DRIVING PERFORMANCE IN A SIMULATOR ENVIRONMENT. Proceedings : European Transport Conference
  Academic article

2012

• Hagemann, Cecilie Therese; Spigset, Olav; Helland, Arne; Espnes, Ketil Arne; Ormstad, Kari; Schei, Berit. (2012) Alcohol and drug findings in women subjected to sexual assault in Trondheim, Norway - associations with background and assault characteristics and clinical variables. Acta Obstetricia et Gynecologica Scandinavica
  Conference abstract
• Frost, Joachim; Helland, Arne; Nordrum, Ivar Skjåk; Slørdal, Lars. (2012) Investigation of morphine and morphine glucuronide levels and cytochrome P450 isoenzyme 2D6 genotype in codeine-related deaths. Forensic Science International
  Academic article
• Aa, Erlend; Helland, Arne; Spigset, Olav. (2012) Kvetiapin kan ha misbrukspotensial. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic literature review

2011

• Westin, Andreas; Helland, Arne; Strøm, Elin. (2011) Til å misforstå om pregabalinmisbruk. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Commentary
• Helland, Arne; Bramness, Jørgen. (2011) Baklofen ved alkoholavhengighet. Tidsskrift for Den norske legeforening (Tidsskriftet)
  Academic literature review

2010

• Helland, Arne; Vogt, Christina; Slørdal, Lars. (2010) Death of a 10-Month-Old Boy After Exposure to Ethylmorphine. Journal of Forensic Sciences
  Academic article