Sys Stybe Johansen

Sys Stybe Johansen

Associate Professor

ORCID: 0000-0002-9555-5134

Publication year:
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1 - 100 out of 150Page size: 100
  1. 2024
  2. Accepted/In press

    Automated enzymatic hydrolysis of urine samples for improved systematic toxicological analysis of drug-facilitated sexual assault cases

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian & Nielsen, Marie Katrine Klose, 2024, (Accepted/In press) In: Drug Testing and Analysis.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    CCH attack frequency reduction after psilocybin correlates with hypothalamic functional connectivity

    Madsen, M. K., Petersen, A. S., Stenbæk, Dea Siggaard, Sørensen, I. M., Schiønning, H., Fjeld, T., Nykjær, C. H., Larsen, S. M. U., Grzywacz, M., Mathiesen, T., Klausen, I. L., Overgaard-Hansen, O., Brendstrup-Brix, K., Linnet, Kristian, Johansen, Sys Stybe, Fisher, P. M., Jensen, Rigmor Højland & Knudsen, Gitte Moos, 2024, In: Headache. 64, 1, p. 55-67

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Exploring Enzymatic Hydrolysis of Urine Samples for Investigation of Drugs Associated with Drug-Facilitated Sexual Assault

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian, Rasmussen, Brian Schou & Nielsen, Marie Katrine Klose, 2024, In: Pharmaceuticals. 17, 1, 11 p., 13.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. 2023
  6. Published

    A Systematic Toxicological Analysis Strategy for Drug: Facilitated Sexual Assault Cases

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian & Nielsen, Marie Katrine Klose, May 2023, 7th Annual Meeting of the Nordic Association of Forensic Toxicologists (NAFT): Abstract book. Copenhagen: Nordic Association of Forensic Toxicologists (NAFT), 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research › peer-review

  7. Published

    Detection of scopolamine in urine and hair in a drug-facilitated sexual assault

    Melchior, S. E., Nielsen, Marie Katrine Klose, Oropeza, A. R., Banner, Jytte & Johansen, Sys Stybe, 2023, In: Forensic Science International. 347, 5 p., 111678.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Detection of scopolamine in urine and hair in a drug-facilitated sexual assault case

    Melchior, S. E., Nielsen, Marie Katrine Klose, Oropeza, A. R., Banner, Jytte & Johansen, Sys Stybe, 2023, TIAFT 2023: 60th International Association of Forensic Toxicologists Meeting: Abstract book. p. 108-108 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research › peer-review

  9. Published

    Detection of scopolamine in urine and hair in a drug-facilitated sexual assault case

    Melchior, S. E., Nielsen, Marie Katrine Klose, Oropeza, A. R., Banner, Jytte & Johansen, Sys Stybe, 2023, p. P51. 1 p.

    Research output: Contribution to conference › Poster › Research

  10. Published

    Driving under the Influence of Amphetamine: Analytical Evaluation of Illegal or Prescription Drug Intake Using Chiral UHPLC-MS/MS

    Nielsen, Marie Katrine Klose, Andersen, N. Z., Rasmussen, Brian Schou & Johansen, Sys Stybe, 2023, In: Journal of Analytical Toxicology. 47, 3, p. 280-286

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    Finding Forensic Evidence: Toxicological Results from Drug-Facilitated Sexual Assault Cases in Eastern Denmark from 2015–2022

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian & Nielsen, Marie Katrine Klose, 2023. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  12. Published

    Reference concentrations and distribution of 7-aminoclonazepam in hair following a single dose of clonazepam

    Nielsen, Marie Katrine Klose, Johansen, Sys Stybe & Kronstrand, R., 2023. 1 p.

    Research output: Contribution to conference › Poster › Research › peer-review

  13. Published

    Reference concentrations and distribution of 7-aminoclonazepam in hair following a single dose of clonazepam

    Nielsen, Marie Katrine Klose, Johansen, Sys Stybe & Kronstrand, R., 2023. 2 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  14. Published

    Toxicological investigations in drug-facilitated sexual assault cases

    Skov, Kathrine Østerballe, Nielsen, Marie Katrine Klose, Johansen, Sys Stybe & Linnet, Kristian, 2023, Copenhagen: University of Copenhagen. 77 p.

    Research output: Book/Report › Ph.D. thesis › Research

  15. Published

    Uncovering forensic evidence of drug-facilitated sexual assault: Toxicological findings from Eastern Denmark from 2015–2022

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian & Nielsen, Marie Katrine Klose, 2023, In: Legal Medicine. 65, 10 p., 102325.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    What’s in the sample? Toxicological findings from drug-facilitated sexual assault cases in eastern Denmark from 2015–2022

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian & Nielsen, Marie Katrine Klose, 2023. 1 p.

    Research output: Contribution to conference › Poster › Research

  17. Published

    What’s in the sample? Toxicological findings from drug-facilitated sexual assault cases in eastern Denmark from 2015–2022

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian & Nielsen, Marie Katrine Klose, 2023, 60th International Association of Forensic Toxicologists Meeting (TIAFT): Abstract book. Rome: TIAFT, p. 95-95

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research › peer-review

  18. 2022
  19. Published

    A review on the forensic toxicology of global drug-facilitated sexual assaults

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian & Nielsen, Marie Katrine Klose, 2022, In: European Review for Medical and Pharmacological Sciences. 26, 1, p. 183-197

    Research output: Contribution to journal › Review › Research › peer-review

  20. Published

    Concentrations of citalopram and escitalopram in postmortem hair segments

    Rygaard, K., Nielsen, Marie Katrine Klose, Linnet, Kristian, Banner, Jytte & Johansen, Sys Stybe, 2022, In: Forensic Science International. 336, 8 p., 111349.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. Published

    Improving analysis of urine samples from drug-facilitated sexual assault cases

    Skov, Kathrine Østerballe, Johansen, Sys Stybe, Linnet, Kristian & Nielsen, Marie Katrine Klose, 2022, In: Toxicologie Analytique et Clinique. 34, 3 Suppl, p. S168-S169 P164.

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  22. Published

    Postmortem hair, a tool for time resolved analysis of antipsychotics and antidepressants

    Svane, K. R. & Johansen, Sys Stybe, 2022, University of Copenhagen. 48 p.

    Research output: Book/Report › Ph.D. thesis › Research

  23. Published

    Psilocybin-induced reduction in chronic cluster headache attack frequency correlates with changes in hypothalamic functional connectivity

    Madsen, M. K., Petersen, A. S., Stenbæk, Dea Siggaard, Sorensen, I. M., Schionning, H., Fjeld, T., Nykjaer, C., Larsen, S. M. U., Grzywacz, M., Mathiesen, T., Klausen, I., Hansen, O. O., Brendstrup-Brix, K., Linnet, Kristian, Johansen, Sys Stybe, Fisher, P. M., Jensen, Rasmus Herlo Beenfeldt, Knudsen, Gitte Moos & Madsen, M. K., 2022, medRxiv, 17 p.

    Research output: Working paper › Preprint › Research

  24. 2021
  25. Published

    Hair cortisol concentrations in decedents with severe mental illness – An autopsy-based cohort study

    Busch, Johannes Rødbro, Wang, X., Lynnerup, Niels, Jacobsen, Christina, Jørgensen, Martin Balslev, Linnet, Kristian, Johansen, Sys Stybe & Banner, Jytte, Jul 2021, In: Forensic Science International: Reports. 3, 5 p., 100173.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Postmortem Brain-Blood Ratios of Codeine, Fentanyl, Oxycodone and Tramadol

    Nedahl, Michael, Johansen, Sys Stybe & Linnet, Kristian, Jan 2021, In: Journal of Analytical Toxicology. 45, 1, p. 53–59 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    A Systematic Review of Metabolite-to-Drug Ratios of Pharmaceuticals in Hair for Forensic Investigations

    Rygaard, K., Linnet, Kristian & Johansen, Sys Stybe, 2021, In: Metabolites. 11, 10, 28 p., 686.

    Research output: Contribution to journal › Review › Research › peer-review

  28. Published

    Effects of a single dose of psilocybin on behaviour, brain 5-HT2A receptor occupancy and gene expression in the pig

    Donovan, L. L., Johansen, Jens Vilstrup, Ros, N. F., Jaberi, E., Linnet, Kristian, Johansen, Sys Stybe, Ozenne, Brice Maxime Hugues, Issazadeh-Navikas, Shohreh, Hansen, H. D. & Knudsen, Gitte Moos, 2021, In: European Neuropsychopharmacology. 42, p. 1-11

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Postmortem segmental hair analysis: analysing frequently used antipsychotics in long-term consumers

    Günther, K. N. & Johansen, Sys Stybe, 2021, In: TIAFT Bulletin. 51, 1, p. 19-26

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Psilocybin-induced changes in brain network integrity and segregation correlate with plasma psilocin level and psychedelic experience

    Madsen, M. K., Stenbæk, Dea Siggaard, Arvidsson, A., Armand, Sophia, Marstrand-Joergensen, M. R., Johansen, Sys Stybe, Linnet, Kristian, Ozenne, Brice Maxime Hugues, Knudsen, Gitte Moos & Fisher, P. M., 2021, In: European Neuropsychopharmacology. 50, p. 121-132 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. 2020
  32. Published

    Concentrations of aripiprazole and dehydroaripiprazole in hair segments from deceased individuals with mental disorders

    Rygaard, K., Linnet, Kristian, Banner, Jytte & Johansen, Sys Stybe, Dec 2020, In: Forensic Science International. 317, 8 p., 110523.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Temporal patterns of tramadol in hair after a single dose

    Johansen, Sys Stybe, Dang, L. T. V. L., Nielsen, Marie Katrine Klose, Haage, P., Kugelberg, F. C. & Kronstrand, R., Nov 2020, In: Forensic Science International. 316, 9 p., 110546.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Published

    Segmental hair analysis of olanzapine and N-desmethyl-olanzapine in postmortem hair from mentally ill patients by LC–MS/MS

    Günther, K. N., Banner, Jytte, Linnet, Kristian & Johansen, Sys Stybe, 25 Oct 2020, In: Journal of Pharmaceutical and Biomedical Analysis. 190, 9 p., 113510.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Internal quality control samples for hair testing

    Nielsen, Marie Katrine Klose & Johansen, Sys Stybe, 5 Sep 2020, In: Journal of Pharmaceutical and Biomedical Analysis. 188, 7 p., 113459.

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    Ketamine analogues: Comparative toxicokinetic in vitro–in vivo extrapolation and quantification of 2-fluorodeschloroketamine in forensic blood and hair samples

    Davidsen, A. B., Mardal, Marie, Holm, N. B., Andreasen, A. K., Johansen, Sys Stybe, Noble, C., Dalsgaard, Petur Weihe & Linnet, Kristian, 20 Feb 2020, In: Journal of Pharmaceutical and Biomedical Analysis. 180, 113049.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Distribution of zopiclone and main metabolites in hair following a single dose

    Hansen, Stine Lund, Johansen, Sys Stybe, Nielsen, Marie Katrine Klose, Nilsson, G. & Kronstrand, R., Jan 2020, In: Forensic Science International. 306, 9 p., 110074.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    In vitro and in vivo metabolism and detection of 3-HO-PCP, a synthetic phencyclidine, in human samples and pooled human hepatocytes using high resolution mass spectrometry

    Davidsen, A. B., Mardal, Marie, Johansen, Sys Stybe, Dalsgaard, Petur Weihe & Linnet, Kristian, 2020, In: Drug Testing and Analysis. 12, 7, p. 987-993 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. 2019
  40. Published

    Hair testing for cortisol by UPLC-MS/MS in a family: External cross-contamination from use of cortisol cream

    Wang, X., Busch, Johannes Rødbro, Banner, Jytte, Linnet, Kristian & Johansen, Sys Stybe, Dec 2019, In: Forensic Science International. 305, 7 p., 109968.

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    Amitriptyline accumulation in tissues after coated activated charcoal hemoperfusion—a randomized controlled animal poisoning model

    Jansen, T., Hoegberg, L. C. G., Eriksen, Thomas, Dalhoff, Kim, Belhage, B. & Johansen, Sys Stybe, Oct 2019, In: Naunyn-Schmiedeberg's Archives of Pharmacology. 392, 10, p. 1285–1292

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Brain-blood ratio of morphine in heroin and morphine autopsy cases

    Nedahl, Michael, Johansen, Sys Stybe & Linnet, Kristian, 1 Aug 2019, In: Forensic Science International. 301, p. 388-393

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. Published

    Identification of phenobarbital and other barbiturates in forensic drug screening using positive electrospray ionization liquid chromatography−high resolution mass spectrometry

    Høj, L. J., Mollerup, Christian Brinch, Rasmussen, Brian Schou, Johansen, Sys Stybe, Linnet, Kristian & Dalsgaard, Petur Weihe, Aug 2019, In: Drug Testing and Analysis. 11, 8, p. 1258-1263

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    Postmortem Brain-Blood Ratios of Amphetamine, Cocaine, Ephedrine, MDMA and Methylphenidate

    Nedahl, Michael, Johansen, Sys Stybe & Linnet, Kristian, Jun 2019, In: Journal of Analytical Toxicology. 43, 5, p. 378–384

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    Clinical signs in a non-Parkinson’s patient from therapeutic doses of pramipexol given in error – and antidotal reversal

    Bøgevig, S., Johansen, Sys Stybe, Kruse, H. & Heogberg, L., 24 May 2019, In: Clinical Toxicology. 57, 6, p. 511 1 p., 190.

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  46. Published

    Retrospective analysis for valproate screening targets with liquid chromatography-high resolution mass spectrometry with positive electrospray ionization: An omics-based approach

    Mollerup, Christian Brinch, Rasmussen, Brian Schou, Johansen, Sys Stybe, Mardal, Marie, Linnet, Kristian & Dalsgaard, Petur Weihe, May 2019, In: Drug Testing and Analysis. 11, 5, p. 730-738

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    Segmental Hair Analysis-Interpretation of the Time of Drug Intake in Two Patients Undergoing Drug Treatment

    Wang, X., Johansen, Sys Stybe, Nielsen, Marie Katrine Klose & Linnet, Kristian, May 2019, In: Journal of Forensic Sciences. 64, 3, p. 950-955

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    Prolonged clinical course from suspected verapamil bezoar formation in an intentional massive overdose from verapamil and enalapril.

    Hoegsberg, L., Johansen, Sys Stybe, Petersen, T., Palmqvist, D. & Boegevig, S., 2019, In: Clinical Toxicology. 57, 6, p. 515 1 p., 198.

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  49. Published

    Psilocybin occupancy of brain serotonin 2A receptors correlates with psilocin levels and subjective experience: a [11C]Cimbi-36 PET study in humans

    Madsen, M. K., Burmester, D., Stenbaek, D. S., Kristiansen, S., Dyssegaard, A., Lehel, S., Linnet, Kristian, Johansen, Sys Stybe, Svarer, C., Ozenne, B., Erritzoe, D., Fisher, P. M. & Knudsen, Gitte Moos, 2019, In: European Neuropsychopharmacology. 29, Suppl. 1, p. S304-S305

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  50. Published

    Psychedelic effects of psilocybin correlate with serotonin 2A receptor occupancy and plasma psilocin levels

    Madsen, M. K., Fisher, P. M., Burmester, D., Dyssegaard, A., Stenbæk, D. S., Kristiansen, S., Johansen, Sys Stybe, Lehel, S., Linnet, Kristian, Svarer, C., Erritzoe, D., Ozenne, Brice Maxime Hugues & Knudsen, Gitte Moos, 2019, In: Neuropsychopharmacology. 44, p. 1328-1334

    Research output: Contribution to journal › Journal article › Research › peer-review

  51. 2018
  52. Published

    Fatal intoxications among non-drug addicts in Eastern Denmark over a 5-year period (2008–2012)

    Johansen, Sys Stybe, Jacobsen, Christina & Linnet, Kristian, 4 Dec 2018, In: Research and Reports in Forensic Medical Science. 8, p. 9—16

    Research output: Contribution to journal › Journal article › Research › peer-review

  53. Published

    Reference Brain and Blood Concentrations of Olanzapine in Postmortem Cases

    Nedahl, Michael, Johansen, Sys Stybe & Linnet, Kristian, 1 Nov 2018, In: Journal of Analytical Toxicology. 42, 9, p. 650-654 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  54. Published

    Segmental Analysis of Chlorprothixene and Desmethylchlorprothixene in Postmortem Hair

    Günther, K. N., Johansen, Sys Stybe, Wicktor, P., Banner, Jytte & Linnet, Kristian, 1 Nov 2018, In: Journal of Analytical Toxicology. 42, 9, p. 642-649

    Research output: Contribution to journal › Journal article › Research › peer-review

  55. Published

    Postmortem analysis of three methoxyacetylfentanyl-related deaths in Denmark and in vitro metabolite profiling in pooled human hepatocytes

    Mardal, Marie, Johansen, Sys Stybe, Davidsen, A. B., Telving, R., Jornil, J. R., Dalsgaard, Petur Weihe, Hasselstrøm, J. B., Øiestad, Å. M., Linnet, Kristian & Andreasen, M. F., Sep 2018, In: Forensic Science International. 290, p. 310-317

    Research output: Contribution to journal › Journal article › Research › peer-review

  56. Published

    Metabolite Profiling of Methoxyacetylfentanyl in Pooled Human Hepatocytes and Quantitation in Biological Samples from a Postmortem Forensic Case

    Mardal, Marie, Johansen, Sys Stybe, Davidsen, A. B., Dalsgaard, Petur Weihe & Linnet, Kristian, 28 Aug 2018.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  57. Published

    Validation of a fully automated solid‐phase extraction and ultra‐high‐performance liquid chromatography–tandem mass spectrometry method for quantification of 30 pharmaceuticals and metabolites in post‐mortem blood and brain samples

    Nielsen, Marie Katrine Klose, Nedahl, Michael, Johansen, Sys Stybe & Linnet, Kristian, Jul 2018, In: Drug Testing and Analysis. 10, 7, p. 1147-1157

    Research output: Contribution to journal › Journal article › Research › peer-review

  58. Published

    Hair analysis in toxicological investigation of drug-facilitated crimes in Denmark over a 8-year period

    Wang, X., Johansen, Sys Stybe, Nielsen, Marie Katrine Klose & Linnet, Kristian, 1 Apr 2018, In: Forensic Science International. 285, p. e1-e12 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  59. Published

    Reference Brain/Blood Concentrations of Citalopram, Duloxetine, Mirtazapine and Sertraline

    Nedahl, Michael, Johansen, Sys Stybe & Linnet, Kristian, 1 Apr 2018, In: Journal of Analytical Toxicology. 42, 3, p. 149-156

    Research output: Contribution to journal › Journal article › Research › peer-review

  60. Published

    Application of a screening method for fentanyl and its analogues using UHPLC-QTOF-MS with data-independent acquisition (DIA) in MSE mode and retrospective analysis of authentic forensic blood samples

    Noble, C., Dalsgaard, Petur Weihe, Johansen, Sys Stybe & Linnet, Kristian, Apr 2018, In: Drug Testing and Analysis. 10, 4, p. 651-662

    Research output: Contribution to journal › Journal article › Research › peer-review

  61. Published

    Post-mortem quetiapine concentrations in hair segments of psychiatric patients - Correlation between hair concentration, dose and concentration in blood

    Günther, K. N., Johansen, Sys Stybe, Nielsen, Marie Katrine Klose, Wicktor, P., Banner, Jytte & Linnet, Kristian, Apr 2018, In: Forensic Science International. 285, p. 58-64 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  62. Published

    Amitriptyline accumulation in tissues after coated activated charcoal hemoperfusion: a randomized controlled animal poisoning model

    Jansen, T., Hoegberg, L. C. G., Eriksen, Thomas, Dalhoff, Kim, Belhage, B. & Johansen, Sys Stybe, 2018, In: Clinical Toxicology. 56, 6, p. 513-513 133.

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  63. 2017
  64. Published

    Enantioselective analysis of citalopram and demethylcitalopram in human whole blood by chiral LC-MS/MS and application in forensic cases

    Johansen, Sys Stybe, Oct 2017, In: Drug Testing and Analysis. 9, 10, p. 1549–1554

    Research output: Contribution to journal › Journal article › Research › peer-review

  65. Published

    Advantages of analyzing postmortem brain samples in routine forensic drug screening—case series of three non-natural deaths tested positive for lysergic acid diethylamide (LSD)

    Mardal, Marie, Johansen, Sys Stybe, Thomsen, Ragnar & Linnet, Kristian, Sep 2017, In: Forensic Science International. 278, p. e14-e18

    Research output: Contribution to journal › Journal article › Research › peer-review

  66. Published

    Determination of GHB and GHB-β-O-glucuronide in hair of three narcoleptic patients-Comparison between single and chronic GHB exposure

    Mehling, L., Wang, X., Johansen, Sys Stybe, Spottke, A., Heidbreder, A., Young, P., Madea, B. & Hess, C., Sep 2017, In: Forensic Science International. 278, p. e8-e13

    Research output: Contribution to journal › Journal article › Research › peer-review

  67. Published

    The significance of sampling time in therapeutic drug monitoring of clozapine

    Jakobsen, M. I., Larsen, J. R., Svensson, C. K., Johansen, Sys Stybe, Linnet, Kristian, Nielsen, J. & Fink-Jensen, Anders, Feb 2017, In: Acta Psychiatrica Scandinavica. 135, 2, p. 159-169 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  68. Published

    Deposition of diazepam and its metabolites in hair following a single dose of diazepam

    Wang, X., Johansen, Sys Stybe, Zhang, Y., Jia, J., Rao, Y., Jiang, F. & Linnet, Kristian, Jan 2017, In: International Journal of Legal Medicine (Print). 131, 1, p. 131-141 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  69. Published

    Detection of the antipsychotic drug quetiapine in the blood, urine and hair samples of the victim of a drug-facilitated sexual assault

    Johansen, Sys Stybe, Jan 2017, In: Forensic Science International. 270, p. e12-e15 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  70. Published

    In vitro studies on flubromazolam metabolism and detection of its metabolites in authentic forensic samples

    Noble, C., Mardal, Marie, Holm, N. B., Johansen, Sys Stybe & Linnet, Kristian, 2017, In: Drug Testing and Analysis. 9, 8, p. 1182–1191

    Research output: Contribution to journal › Journal article › Research › peer-review

  71. Published

    Gamma-Hydroxybutyrate (GHB) Content in Hair Samples Correlates Negatively with Age in Succinic Semialdehyde Dehydrogenase Deficiency

    Johansen, Sys Stybe, Wang, X., Pedersen, D. S., Pearl, P. L., Roullet, J., Ainslie, G. R., Vogel, K. R. & Gibson, K. M., 2017, JIMD Reports. Springer, Vol. 36. p. 93-98 6 p. (JIMD Reports).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  72. Published

    Postmortem concentrations of gamma-hydroxybutyrate (GHB) in peripheral blood and brain tissue - Differentiating between postmortem formation and antemortem intake

    Thomsen, Ragnar, Rasmussen, Brian Schou, Johansen, Sys Stybe & Linnet, Kristian, 2017, In: Forensic Science International. 272, p. 154-158

    Research output: Contribution to journal › Journal article › Research › peer-review

  73. Published

    Several possible toxicological and genetic tools for the extension of the detection window after GHB intake

    Mehling, L., Piper, T., Lott, S., Wang, X., Dib, J., Pedersen, D. S., Heidbreder, A., Young, P., Madea, B., Johansen, Sys Stybe, Courts, C., Thevis, M. & Hess, C., 2017, In: Toxichem Krimtech. 84, 3, p. 184-190 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  74. Published

    Simultaneous determination of ethanol's four types of non-oxidative metabolites in human whole blood by liquid chromatography tandem mass spectrometry

    Zhang, X., Zheng, F., Lin, Z., Johansen, Sys Stybe, Yu, T., Liu, Y., Huang, Z., Li, J., Yan, J. & Rao, Y., 2017, In: Analytica Chimica Acta. 963, p. 68-75 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  75. Published

    Targeted analysis of 116 drugs in hair by UHPLC-MS/MS and its application to forensic cases

    Wang, X., Johansen, Sys Stybe, Nielsen, Marie Katrine Klose & Linnet, Kristian, 2017, In: Drug Testing and Analysis. 9, 8, p. 1137–1151

    Research output: Contribution to journal › Journal article › Research › peer-review

  76. 2016
  77. Published

    Postmortem Brain and Blood Reference Concentrations of Alprazolam, Bromazepam, Chlordiazepoxide, Diazepam, and their Metabolites and a Review of the Literature

    Skov, L., Holm, K. M. D., Johansen, Sys Stybe & Linnet, Kristian, Sep 2016, In: Journal of Analytical Toxicology. 40, 7, p. 529-536 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  78. Published

    Sensitive, automatic method for the determination of diazepam and its five metabolites in human oral fluid by online solid-phase extraction and liquid chromatography with tandem mass spectrometry

    Jiang, F., Rao, Y., Wang, R., Johansen, Sys Stybe, Ni, C., Liang, C., Zheng, S., Ye, H. & Zhang, Y., May 2016, In: Journal of Separation Science. 39, 10, p. 1873-1883 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  79. Published

    Drug facilitated sexual assault with lethal outcome: GHB intoxication in a six-year-old girl

    Mehling, L., Johansen, Sys Stybe, Wang, X., Doberentz, E., Madea, B. & Hess, C., Feb 2016, In: Forensic Science International. 259, p. e25-e31

    Research output: Contribution to journal › Journal article › Research › peer-review

  80. Published

    Development of a UPLC–MS/MS method for determining ɣ-hydroxybutyric acid (GHB) and GHB glucuronide concentrations in hair and application to forensic cases

    Wang, X., Johansen, Sys Stybe & Linnet, Kristian, Jan 2016, In: Forensic Toxicology. 34, 1, p. 51-60

    Research output: Contribution to journal › Journal article › Research › peer-review

  81. 2015
  82. Published

    Evaluation of poly-drug use in methadone-related fatalities using segmental hair analysis

    Nielsen, Marie Katrine Klose, Johansen, Sys Stybe & Linnet, Kristian, Mar 2015, In: Forensic Science International. 248, p. 134–139 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  83. Published

    Stability of γ-Hydroxybutyrate in Blood Samples from Impaired Drivers after Storage at 4°C and Comparison of GC–FID–GBL and LC–MS-MS Methods of Analysis

    Jones, A. W., Gladh, S., Windberg, C. N. & Johansen, Sys Stybe, Feb 2015, In: Journal of Analytical Toxicology. 39, 4, p. 294-299 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  84. Published

    Postmortem Femoral Blood Reference Concentrations of Aripiprazole, Chlorprothixene, and Quetiapine

    Skov, L., Johansen, Sys Stybe & Linnet, Kristian, Jan 2015, In: Journal of Analytical Toxicology. 39, 1, p. 41-44 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  85. Published

    Postmortem Quetiapine Reference Concentrations in Brain and Blood

    Skov, L., Johansen, Sys Stybe & Linnet, Kristian, 2015, In: Journal of Analytical Toxicology. 39, 7, p. 557-561 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  86. 2014
  87. Published

    Intoxications detected by hair analysis of bleached and non-bleached hair

    Johansen, Sys Stybe & Windberg, C. N., Jun 2014, In: Toxicologie Analytique et Clinique. 26, 2, p. S7 1 p., O6.

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  88. Published

    Validation of a method for the targeted analysis of 96 drugs in hair by UPLC-MS/MS

    Montesano, C., Johansen, Sys Stybe & Nielsen, Marie Katrine Klose, 25 Jan 2014, In: Journal of Pharmaceutical and Biomedical Analysis. 88, p. 295-306 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  89. Published

    Postmortem Femoral Blood Concentrations of Risperidone

    Linnet, Kristian & Johansen, Sys Stybe, Jan 2014, In: Journal of Analytical Toxicology. 38, 1, p. 57-60 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  90. Published

    Pre-analytical and analytical variation of drug determination in segmented hair using ultra-performance liquid chromatography-tandem mass spectrometry

    Nielsen, Marie Katrine Klose, Johansen, Sys Stybe & Linnet, Kristian, Jan 2014, In: Forensic Science International. 234, p. 16-21 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  91. 2013
  92. Published

    Evaluation of metabolite/drug ratios in blood and urine as a tool for confirmation of a reduced tolerance in methadone-related deaths in Denmark

    Nielsen, Marie Katrine Klose, Johansen, Sys Stybe & Linnet, Kristian, 1 Dec 2013, In: Drug and Alcohol Dependence. 133, 2, p. 447-51 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  93. Published

    In vitro metabolism studies on mephedrone and analysis of forensic cases

    Pedersen, A. J., Reitzel, Lotte Ask, Johansen, Sys Stybe & Linnet, Kristian, Jun 2013, In: Drug Testing and Analysis. 5, 6, p. 430-438

    Research output: Contribution to journal › Journal article › Research › peer-review

  94. Published

    Dit hår afslører, hvilke stoffer du har taget: Med en håranalyse kan retskemikere spore alt, hvad der har været i dit blod. Håret er en kemisk kalender og kan indeholde det fældende bevis for forbrydelser

    Secher, K. & Johansen, Sys Stybe, 26 Apr 2013

    Research output: Other contribution › Net publication - Internet publication › Communication

  95. Published

    Screening for illicit and medicinal drugs in whole blood using fully automated SPE and UHPLC-TOF-MS with data-independent acquisition

    Pedersen, A. J., Dalsgaard, Petur Weihe, Rode, A. J., Rasmussen, Brian Schou, Müller, Irene Breum, Johansen, Sys Stybe & Linnet, Kristian, 22 Apr 2013, In: Journal of Separation Science. 36, 13, p. 2081-2089

    Research output: Contribution to journal › Journal article › Research › peer-review

  96. Published

    Screening of Danish traffic cases for synthetic cannabinoids in whole blood by LC-MS/MS

    Holm, N. B., Pineda, R., Andersen, D. W., Rasmussen, Brian Schou, Dalsgaard, Petur Weihe, Hoegberg, L., Johansen, Sys Stybe & Linnet, Kristian, 2013, In: Scandinavian Journal of Forensic Science. 19, 2, p. 31-37 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  97. Published

    Severe methylphenidate intoxication-charcoal hemoperfusion as an aid in treating the patient

    Johansen, Sys Stybe, 2013, In: Clinical Toxicology. 3, 1, 2 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  98. 2012
  99. Published

    A suspected facilitated crime (DFC) investigated by hair analysis: SOFT, Boston, MA, USA

    Johansen, Sys Stybe & Nielsen, Marie Katrine Klose, 4 Jul 2012. 1 p.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  100. Published

    Simultaneous Determination of 25 Common Pharmaceuticals in Whole Blood Using Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry

    Nielsen, Marie Katrine Klose & Johansen, Sys Stybe, 19 Jun 2012, In: Journal of Analytical Toxicology. 36, p. 497-506 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  101. Published

    Isomers of fluoroamphetamines detected in forensic cases in Denmark

    Johansen, Sys Stybe & Hansen, T. M., 28 Jan 2012, In: International Journal of Legal Medicine. 126, p. 541-547 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  102. Published

    A drug rape case involving triazolam detected in hair and urine

    Johansen, Sys Stybe, 2012, In: International Journal of Legal Medicine. 126, 637-643

    Research output: Contribution to journal › Journal article › Research › peer-review

  103. Published

    Distribution patterns, dermatomal anesthesia, and Ropivacaine serum concentrations after bilateral dualtransversus abdominis plane block

    Johansen, Sys Stybe, 2012, In: Regional Anesthesia and Pain Medicine. 37, 3, p. 294-301

    Research output: Contribution to journal › Journal article › Research › peer-review

  104. Published

    Fatal intoxications among non-drug addicts in Eastern Denmark over a five-year period (2003-2007)

    Johansen, Sys Stybe, 2012, In: Research and Reports in Forensic Medical Science. 2, p. 1-7 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  105. 2011
  106. Published

    MDPV, Nu også i Danmark – første dokumenterede dødsfald. Møde ved Dansk selskab for Retsmedicin og Dansk Selskab for Ulykkes- og Skadeforbyggelse

    Heiumbürger, R. & Johansen, Sys Stybe, 3 Nov 2011.

    Research output: Contribution to conference › Poster › Research

  107. Published

    Ultrasound-guided bilateral dual transversus abdominis plane block

    Børglum, Jens, Jansen, T., Høgberg, L. C. G., Johansen, Sys Stybe, Christensen, A. F. & Jensen, K., Sep 2011, In: Regional Anesthesia and Pain Medicine. 36, 7, p. E11 1 p.

    Research output: Contribution to journal › Conference abstract in journal › Research › peer-review

  108. Published

    Forgiftningsdødsfald blandt narkomaner i 2007

    Simonsen, Kirsten Wiese, Hansen, A. C., Rollmann, D., Kringsholm, B., Müller, Irene Breum, Johansen, Sys Stybe & Linnet, Kristian, 29 Aug 2011, In: Ugeskrift for Laeger. 173, 35, p. 2118 1 p.

    Research output: Contribution to journal › Conference article › Research

  109. Published

    Drug-related death in Denmark in 2007

    Simonsen, Kirsten Wiese, Hansen, A. C., Rollmann, D., Kringsholm, B., Müller, Irene Breum, Johansen, Sys Stybe & Linnet, Kristian, 1 Aug 2011, In: Danish Medical Bulletin (Online). 58, 8, p. 1-5 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  110. Published

    Postmortem femoral blood concentrations of amlodipine

    Linnet, Kristian & Johansen, Sys Stybe, Jan 2011, In: Journal of Analytical Toxicology. 35, p. 227-231 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  111. Published

    In vivo imaging of cerebral serotonin transporter and serotonin2A receptor binding in 3,4 - methylenedioxymethamphetamine (MDMA or "Ecstasy") and hallucinogen users

    Erritzøe, D. F., Frøkjær, Vibe Gedsø, Holst, K. K., Christoffersen, M., Johansen, Sys Stybe, Svarer, C., Madsen, J., Rasmussen, P. M., Ramsøy, T., Jernigan, T. L. & Knudsen, Gitte Moos, 2011, In: Archives of General Psychiatry. 68, 6, p. 562-576 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  112. Published

    Simultaneous determination of gamma-Hydroxybutyrate (GHB) and its analogues (GBL, 1.4-BD, GVL) in whole blood and urine by liquid chromatography coupled to tandem mass spectrometry

    Johansen, Sys Stybe & Windberg, C. N., 2011, In: Journal of Analytical Toxicology. 35, 1, p. 8-14 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  113. Published

    Venovenøs hæmodiafiltrering til baclofenforgiftet patient

    Nielsen, S. U., Jansen, T., Johansen, Sys Stybe, Linnet, Kristian, Gregersen, P. & Høgberg, L. C. G., 2011, In: Ugeskrift for Laeger. 173, 22, p. 1578-9 2 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  114. 2010
  115. Published

    Findings of amphetamines and ecstasy in drivers in Denmark from 1997-2007

    Nielsen, Marie Katrine Klose & Johansen, Sys Stybe, 2010, In: Scandinavian Journal of Forensic Science. 16, 1, p. 17-19 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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