Nikolai Stephanson

Publikationer
CV
Populärvetenskap och samverkan

Artiklar

Article: JOURNAL OF MASS SPECTROMETRY. 2017;52(8):497-506

Use of LC-HRMS in full scan-XIC mode for multi-analyte urine drug testing - a step towards a 'black-box' solution?

Stephanson NN; Signell P; Helander A; Beck O
Journal article: JOURNAL OF MASS SPECTROMETRY. 2017;52(8):ii

Use of LC‐HRMS in full scan‐XIC mode for multi‐analyte urine drug testing – a step towards a ‘black‐box’ solution?

Stephanson NN; Signell P; Helander A; Beck O
Article: JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES. 2015;985:189-196

Method validation and application of a liquid chromatography-tandem mass spectrometry method for drugs of abuse testing in exhaled breath

Stephanson N; Sandqvist S; Lambert MS; Beck O
Article: ACTA ANAESTHESIOLOGICA SCANDINAVICA. 2014;58(9):1140-1145

Plasma concentration of ketorolac after local infiltration analgesia in hip arthroplasty

Affas F; Eksborg S; Wretenberg P; Olofsson C; Stephanson N; Stiller C-O
Article: THERAPEUTIC DRUG MONITORING. 2014;36(4):528-534

Determination of Amphetamine and Methylphenidate in Exhaled Breath of Patients Undergoing Attention-Deficit/Hyperactivity Disorder Treatment

Beck O; Stephanson N; Sandqvist S; Franck J
Article: DRUG TESTING AND ANALYSIS. 2014;6(4):317-324

Direct and efficient liquid chromatographic-tandem mass spectrometric method for opiates in urine drug testing - importance of 6-acetylmorphine and reduction of analytes

Andersson M; Stephanson N; Ohman I; Terzuoli T; Lindh JD; Beck O
Article: JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES. 2013;930:112-120

Multicomponent LC-MS/MS screening method for detection of new psychoactive drugs, legal highs, in urine-Experience from the Swedish population

Al-Saffar Y; Stephanson NN; Beck O
Article: JOURNAL OF BREATH RESEARCH. 2013;7(2):026006

Detection of drugs of abuse in exhaled breath using a device for rapid collection: comparison with plasma, urine and self-reporting in 47 drug users

Beck O; Stephanson N; Sandqvist S; Franck J
Article: JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES. 2012;909:6-13

Evaluation of a direct high-capacity target screening approach for urine drug testing using liquid chromatography-time-of-flight mass spectrometry

Saleh A; Stephanson NN; Granelli I; Villen T; Beck O
Article: JOURNAL OF ANALYTICAL TOXICOLOGY. 2012;36(9):638-646

Detection of Drugs of Abuse in Exhaled Breath from Users Following Recovery from Intoxication

Beck O; Stephanson N; Sandqvist S; Franck J
Article: ACTA ANAESTHESIOLOGICA SCANDINAVICA. 2012;56(8):1026-1031

Pharmacokinetics after a single intravenous dose of the opioid ketobemidone in neonates

Lundeberg S; Stephanson N; Stiller C-O; Eksborg S
Article: IMMUNOPHARMACOLOGY AND IMMUNOTOXICOLOGY. 2012;34(4):679-685

Serotonin and its 5-HT1 receptor in human mastocytosis

Ritter M; El-Nour H; Hedblad M-A; Butterfield JH; Beck O; Stephanson N; Holst M; Giscombe R; Azmitia EC; Nordlind K
Article: SCANDINAVIAN JOURNAL OF PAIN. 2012;3(1):46-51

A randomized study comparing plasma concentration of ropivacaine after local infiltration analgesia and femoral block in primary total knee arthroplasty.

Affas F; Stiller C-O; Nygårds E-B; Stephanson N; Wretenberg P; Olofsson C
Article: ACTA ANAESTHESIOLOGICA SCANDINAVICA. 2010;54(4):435-441

Pharmacokinetics after an intravenous single dose of the opioid ketobemidone in children

Lundeberg S; Stephanson N; Lafolie P; Olsson GL; Stiller C-O; Eksborg S
Article: JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES. 2008;871(1):101-108

Accurate identification and quantification of 11-nor-Δ⁹-tetrahydrocannabinol-9-carboxylic acid in urine drug testing:: Evaluation of a direct high efficiency liquid chromatographic-mass spectrometric method

Stephanson N; Josefsson M; Kronstrand R; Beck O
Article: JOURNAL OF PSYCHOACTIVE DRUGS. 2008;40(2):219-222

Ecstasy analogues found in cacti

Bruhn JG; El-Seedi HR; Stephanson N; Beck O; Shulgin AT
Article: ALCOHOL AND ALCOHOLISM. 2008;43(2):187-191

Comparison between the urinary alcohol markers EtG, EtS, and GTOL/5-HIAA in a controlled drinking experiment

Hoiseth G; Bernard JP; Stephanson N; Normann PT; Christophersen AS; Morland J; Helander A
Article: JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES. 2008;861(1):22-28

Direct injection LC-MS/MS method for identification and quantification of amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine and 3,4-methylenedioxymethamphetamine in urine drug testing

Andersson M; Gustavsson E; Stephanson N; Beck O
Article: JOURNAL OF MASS SPECTROMETRY. 2007;42(7):940-949

Alcohol biomarker analysis: simultaneous determination of 5-hydroxytryptophol glucuronide and 5-hydroxyindoleacetic acid by direct injection of urine using ultra-performance liquid chromatography-tandem mass spectrometry

Stephanson N; Helander A; Beck O
Article: JOURNAL OF MASS SPECTROMETRY. 2007;42(7):881-889

Validation of direct injection electrospray LC-MS/MS for confirmation of opiates in urine drug testing

Gustavsson E; Andersson M; Stephanson N; Beck O
Article: ALCOHOL AND ALCOHOLISM. 2007;42(4):321-325

Biomarkers to disclose recent intake of alcohol:: Potential of 5-hydroxytryptophol glucuronide testing using new direct UPLC-tandem MS and ELISA methods

Beck O; Stephanson N; Boettcher M; Dahmen N; Fehr C; Helander A
Article: JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES. 2005;816(1-2):107-112

Determination of urinary 5-hydroxytryptophol glucuronide by liquid chromatography-mass spectrometry

Stephanson N; Dahl H; Helander A; Beck O
Article: JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES. 2004;805(1):87-91

Determination of perhexiline and hydroxyperhexiline in plasma by liquid chromatography-mass spectrometry

Beck O; Stephanson N; Morris RG; Sallustio BC; Hjemdahl P
Journal article: HEARING, BALANCE AND COMMUNICATION. 2004;2(3):169-173

Vibration‐induced hearing loss: comparison of the protective efficacy of antioxidants and neurotrophins

Bretlau P; Zou J; Pyykkö I; Toppila E; Olovius NP; Stephanson N; Beck O; Miller J
Article: ORL-JOURNAL FOR OTO-RHINO-LARYNGOLOGY HEAD AND NECK SURGERY. 2003;65(3):155-161

Comparison of the protective efficacy of Neurotrophins and antioxidants for vibration-induced trauma

Zou J; Bretlau P; Pyykkö I; Toppila E; Olovius NP; Stephanson N; Beck O; Miller JM
Article: THERAPEUTIC DRUG MONITORING. 2002;24(5):645-651

Direct quantification of ethyl glucuronide in clinical urine samples by liquid chromatography-mass spectrometry

Stephanson N; Dahl H; Helander A; Beck O
Article: JOURNAL OF ANALYTICAL TOXICOLOGY. 2002;26(4):201-204

Comparison of urinary excretion characteristics of ethanol and ethyl glucuronide

Dahl H; Stephanson N; Beck O; Helander A
Visa fler

Alla övriga publikationer

Book chapter: CRITICAL ISSUES IN ALCOHOL AND DRUGS OF ABUSE TESTING. 2019;p. 321-332

Chapter 23 Application of Liquid Chromatography Combined With High Resolution Mass Spectrometry for Urine Drug Testing

Beck O; Rylski A; Stephanson NN
Conference publication: THERAPEUTIC DRUG MONITORING. 2013;35(5):699

Application of Drug Testing Using Exhaled Breath in a Criminal Justice Setting

Beck O; Stephanson N; Shafaati M; Sandqvist S
Conference publication: THERAPEUTIC DRUG MONITORING. 2011;33(4):484

LC-MS/MS analysis of new "internet drugs"

Stephanson N; Al-Saffar Y; Beck O
Conference publication: THERAPEUTIC DRUG MONITORING. 2011;33(4):484

Experience from clinical analysis of the alcohol biomarker ethyl glucuronide (EtG) in urine

Villen T; Beck O; Stephanson N; Helander A
Published conference paper: FORENSIC SCIENCE INTERNATIONAL. 2008;176(1):76-81

Comparison of ethyl glucuronide in hair with phosphatidylethanol in whole blood as post-mortem markers of alcohol abuse

Bendroth P; Kronstrand R; Helander A; Greby J; Stephanson N; Krantz P
Thesis / dissertation: 2007

Liquid chromatography : mass spectrometry study of two biochemical alcohol markers

Stephanson, Niclas Nikolai
Conference publication: THERAPEUTIC DRUG MONITORING. 2007;29(4):461

Determination of Δ9-tetrahydrocannabinol carboxylic acid by direct injection of urine using UPLC-MS/MS

Stephanson N; Beck O
Conference publication: THERAPEUTIC DRUG MONITORING. 2007;29(4):494

Validation of direct injection LC-MS/MS for identification and quantification of amphetamines in urine

Beck O; Andersson M; Gustavsson E; Stephanson N

Anställningar

Anknuten till Forskning, Laboratoriemedicin, Karolinska Institutet, 2022-2025

Examina och utbildning

MEDICINE DOKTORSEXAMEN, Institutionen för medicin, Solna, Karolinska Institutet, 2007

Artiklar

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Anställningar

Examina och utbildning

Nyheter från KI

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