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  1. No Access

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    In vitro stability of free and glucuronidated cannabinoids in blood and plasma collected in plastic gray-top sodium fluoride tubes following controlled smoked cannabis

    Blood and plasma cannabinoid stability is important for test interpretation and is best studied in authentic rather than fortified samples. Previous studies employed green-top (sodium heparin) tubes; however, ...

    Karl B. Scheidweiler, Sarah K. Himes, Nathalie A. Desrosiers… in Forensic Toxicology (2016)

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    Article

    Cannabinoids in oral fluid by on-site immunoassay and by GC-MS using two different oral fluid collection devices

    Oral fluid (OF) enables non-invasive sample collection for on-site drug testing, but performance of on-site tests with occasional and frequent smokers’ OF to identify cannabinoid intake requires further evalua...

    Nathalie A. Desrosiers, Garry Milman… in Analytical and Bioanalytical Chemistry (2014)

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    In vitro stability of free and glucuronidated cannabinoids in urine following controlled smoked cannabis

    Analyte stability is an important factor in urine test interpretation, yet cannabinoid stability data are limited. A comprehensive study of Δ9-tetrahydrocannabinol (THC), 11-hydroxy-THC (11-OH-THC), 11-nor-9-carb...

    Nathalie A. Desrosiers, Dayong Lee… in Analytical and Bioanalytical Chemistry (2014)

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    3,4-Methylenedioxymethamphetamine (MDMA) and metabolites disposition in blood and plasma following controlled oral administration

    3,4-Methylenedioxymethamphetamine (MDMA) is an illicit phenethylamine ingested for entactogenic and euphoric effects. Although blood is more commonly submitted for forensic analysis, previous human MDMA pharma...

    Rebecca L. Hartman, Nathalie A. Desrosiers… in Analytical and Bioanalytical Chemistry (2014)

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    Article

    Oral fluid and plasma 3,4-methylenedioxymethamphetamine (MDMA) and metabolite correlation after controlled oral MDMA administration

    Oral fluid (OF) offers a noninvasive sample collection for drug testing. However, 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) in OF has not been adequately characterized in comparison to plasma. We admin...

    Nathalie A. Desrosiers, Allan J. Barnes… in Analytical and Bioanalytical Chemistry (2013)