Search Results - "Øiestad, Åse Marit Leere"

Distribution of tetrahydrocannabinol and cannabidiol in several different postmortem matrices by Pettersen, Siren, Øiestad, Åse Marit Leere, Rogde, Sidsel, Brochmann, Gerd-Wenche, Øiestad, Elisabeth Leere, Vindenes, Vigdis

“…•THC and CBD concentrations in pericardial fluid and cardiac blood might be comparable with concentrations in peripheral blood.•Concentrations in muscles were…”
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Blood Concentrations of Designer Benzodiazepines: Relation to Impairment and Findings in Forensic Cases by Heide, Gunhild, Høiseth, Gudrun, Middelkoop, Gerrit, Øiestad, Åse Marit Leere

“…Abstract The use of designer benzodiazepines appears to be increasing in many countries, but data concerning blood concentrations are scarce, making…”
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Rapid determination of designer benzodiazepines, benzodiazepines, and Z-hypnotics in whole blood using parallel artificial liquid membrane extraction and UHPLC-MS/MS by Vårdal, Linda, Wong, Gladys, Øiestad, Åse Marit Leere, Pedersen-Bjergaard, Stig, Gjelstad, Astrid, Øiestad, Elisabeth Leere

“…Benzodiazepines (BZD) and Z-hypnotics are frequently analyzed in forensic laboratories, and in 2012, the designer benzodiazepines (DBZD) emerged on the illegal…”
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Validated methods for determination of neurotransmitters and metabolites in rodent brain tissue and extracellular fluid by reversed phase UHPLC–MS/MS by Bergh, Marianne Skov-Skov, Bogen, Inger Lise, Lundanes, Elsa, Øiestad, Åse Marit Leere

“…•Fast and sensitive UHPLC–MS/MS-method for determination of neurotransmitters.•Validated method for analysis of both brain extracellular fluid and brain…”
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Determination of adrenaline, noradrenaline and corticosterone in rodent blood by ion pair reversed phase UHPLC–MS/MS by Bergh, Marianne Skov-Skov, Bogen, Inger Lise, Andersen, Jannike Mørch, Øiestad, Åse Marit Leere, Berg, Thomas

“…•An ion pair UHPLC–MS/MS method employing HFBA for stress hormone determination.•Simultaneous determination of adrenaline, noradrenaline and…”
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Can measurements of heroin metabolites in post-mortem matrices other than peripheral blood indicate if death was rapid or delayed? by Thaulow, Cecilie Hasselø, Øiestad, Åse Marit Leere, Rogde, Sidsel, Andersen, Jannike Mørch, Høiseth, Gudrun, Handal, Marte, Mørland, Jørg, Vindenes, Vigdis

“…•Alternative matrices findings may discern rapid from delayed heroin deaths.•Interpretation of heroin metabolite ratios in muscle seem less…”
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Zopiclone concentrations in oral fluid and blood after, administration of therapeutic doses of zopiclone by Hjelmeland, Knut, Gustavsen, Ingebjørg, Øiestad, Elisabeth Leere, Øiestad, Åse Marit Leere, Høiseth, Gudrun, Mørland, Jørg

“…•Oral fluid zopiclone concentration is unsuitable to estimate blood concentration.•Intake of a meal reduces the oral fluid to blood concentration ratio.•Intake…”
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Determination of 21 drugs in oral fluid using fully automated supported liquid extraction and UHPLC‐MS/MS by Valen, Anja, Leere Øiestad, Åse Marit, Strand, Dag Helge, Skari, Ragnhild, Berg, Thomas

“…Collection of oral fluid (OF) is easy and non‐invasive compared to the collection of urine and blood, and interest in OF for drug screening and diagnostic…”
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Selectivity and sensitivity of urine fentanyl test strips to detect fentanyl analogues in illicit drugs by Bergh, Marianne Skov-Skov, Øiestad, Åse Marit Leere, Baumann, Michael H., Bogen, Inger Lise

“…•Four brands of urine fentanyl test strips were evaluated for drug solution testing.•All test strips detected fentanyl and 21–24 of the 28 fentanyl analogues…”
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High-throughput quantification of emerging “nitazene” benzimidazole opioid analogs by microextraction and UHPLC–MS-MS by Schüller, Maria, Lucic, Ivana, Øiestad, Åse Marit Leere, Pedersen-Bjergaard, Stig, Øiestad, Elisabeth Leere

“…Abstract Benzimidazole opioids, often referred to as nitazenes, represent a subgroup of new psychoactive substances with a recent increase in fatal overdoses…”
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Lethal poisonings with AH-7921 in combination with other substances by Karinen, Ritva, Tuv, Silja Skogstad, Rogde, Sidsel, Peres, Mariana Dadalto, Johansen, Unni, Frost, Joachim, Vindenes, Vigdis, Øiestad, Åse Marit Leere

“…Highlights • We present two case reports of lethal poisonings with AH-7921 in combination with other substances. • Toxicological findings are discussed. • An…”
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Addressing the Fentanyl Analogue Epidemic by Multiplex UHPLC-MS/MS Analysis of Whole Blood by Bergh, Marianne Skov-Skov, Bogen, Inger Lise, Wilson, Steven Ray, Øiestad, Åse Marit Leere

“…Fentanyl and fentanyl analogues (fentanyls) are very potent opioids posing a serious threat to the public health. Thousands of overdose deaths across the world…”
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Distinguishing Between Cyclopropylfentanyl and Crotonylfentanyl by Methods Commonly Available in the Forensic Laboratory by Bergh, Marianne Skov-Skov, Bogen, Inger Lise, Wohlfarth, Ariane, Wilson, Steven Ray, Øiestad, Åse Marit Leere

“…The opioid analgesic fentanyl and its analogues pose a major health concern due to its high potency and the increasing number of overdose deaths worldwide. The…”
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Oral fluid drug analysis in the age of new psychoactive substances by Øiestad, Elisabeth Leere, Øiestad, Åse Marit Leere, Gjelstad, Astrid, Karinen, Ritva

“…Oral fluid has become an important matrix for drugs of abuse analysis. These days the applicability is challenged by the fact that an increasing number of new…”
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Comparative Study of Postmortem Concentrations of Antidepressants in Several Different Matrices by Øiestad, Åse Marit Leere, Karinen, Ritva, Rogde, Sidsel, Nilsen, Stian, Boye Eldor, Kari-Beate, Brochmann, Gerd-Wenche, Arnestad, Marianne, Øiestad, Elisabeth Leere, Peres, Mariana Dadalto, Kristoffersen, Lena, Vindenes, Vigdis

“…Peripheral blood (PB) is considered to be the golden standard for measuring postmortem drug concentrations. In several cases, PB is however not available, but…”
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Separation of isomers of new psychoactive substances and isotope-labeled amphetamines using UHPSFC-MS/MS and UHPLC-MS/MS by Leere Øiestad, Åse Marit, Berg, Thomas, Eliassen, Elin, Wiklund, Tony, Sand, Ketil, Leere Øiestad, Elisabeth

“…The use of sub-2 µm particles columns is finding its use in ultrahigh-pressure supercritical fluid chromatography (UHPSFC), opening up for fast analysis and…”
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Drug Screening of Whole Blood by Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry by Øiestad, Elisabeth Leere, Johansen, Unni, Øiestad, Åse Marit Leere, Christophersen, Asbjørg Solberg

“…An ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS-MS) method for screening of drugs in whole blood has been developed and validated…”
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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 by Berg, Thomas, Karlsen, Morten, Øiestad, Åse Marit Leere, Johansen, Jon Eigill, Liu, Huiling, Strand, Dag Helge

“…•Several new 13C labeled internal standards (ISs) used for the first time as ISs.•13C labeled ISs better suited than 2H labeled ISs in RP LC–MS/MS…”
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Methadone, Buprenorphine, Oxycodone, Fentanyl and Tramadol in Multiple Postmortem Matrices by Havig, Stine Marie, Vindenes, Vigdis, Øiestad, Åse Marit Leere, Rogde, Sidsel, Thaulow, Cecilie Hasselø

“…Abstract Peripheral blood (PB) concentrations are generally preferred for postmortem toxicological interpretation, but some autopsy cases may lack blood for…”
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Gas phase reactivity of small cationic cobalt clusters towards methanol by Øiestad, Åse Marit Leere, Uggerud, Einar

“…The gas phase reactivity of small cationic cobalt clusters, Co n + (n=1–12) , towards methanol has been investigated using Fourier transform ion cyclotron…”
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