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Kristian Björnstad

3 papers in the library · 126 citations · publishing 2008-2009

Papers

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Bioanalytical and clinical evaluation of 103 suspected cases of intoxications with psychoactive plant materials.

Clinical toxicology (Philadelphia, Pa.) July 1, 2009 Kristian Björnstad, Peter Hultén, Olof Beck et al. 35 citations

Problems associated with the increasing abuse of plant-derived psychoactive substances have recently attracted attention. This study involved bioanalytical and clinical examinations of intoxication cases suspected to be linked to such plant materials. Urine samples were collected at emergency wards in Sweden from patients who either admitted or were suspected of ingestion of psychoactive plant...

A multi-component LC-MS/MS method for detection of ten plant-derived psychoactive substances in urine.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences April 15, 2009 Kristian Björnstad, Olof Beck, Anders Helander 71 citations

A sensitive and specific LC-MS/MS method for simultaneous detection of 10 plant-derived psychoactive substances (atropine, N,N-dimethyltryptamine, ephedrine, harmaline, harmine, ibogaine, lysergic acid amide, psilocin, scopolamine and yohimbine) in urine was developed. Direct injection of urine diluted with 3 deuterated internal standards allowed for a readily accessible method suitable for...

Development and Clinical Application of an LC-MS-MS Method for Mescaline in Urine

Journal of Analytical Toxicology April 1, 2008 Kristian Björnstad, Anders Helander, O. Beck 20 citations

Mescaline (3,4,5-trimethoxyphenylethylamine) is an hallucinogenic psychoactive substance present in several species of cacti. Mescaline has a documented use dating back 5700 years. In more recent years, the interest in hallucinogenic designer drugs such as ecstasy has also triggered interest in the naturally occurring mescaline. This study was undertaken to develop a liquid...