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Journal of Analytical Toxicology

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https://www.readbyqxmd.com/read/27881622/stability-of-21-cocaine-opioid-and-benzodiazepine-drug-analytes-in-spiked-meconium-at-three-temperatures
#1
Fang Wu, Stephanie J Marin, Gwendolyn A McMillin
In this study, the stability of 21 cocaine, opioid and benzodiazepine analytes in spiked meconium was investigated at three storage temperatures: 4°C, room temperature (RT), and 37°C (body temperature). The drugs/metabolites included were hydrocodone, hydromorphone, codeine, morphine, 6-acetylmorphine (6-AM), oxycodone, oxymorphone, cocaine, cocaethylene, benzoylecgonine, m-hydroxybenzoylecgonine, diazepam, oxazepam, temazepam, nordiazepam, chlordiazepoxide, lorazepam, alprazolam, alpha-hydroxyalprazolam, clonazepam, 7-aminoclonazepam, midazolam, alpha-hydroxymidazolam and zolpidem...
November 22, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27881621/unusual-case-of-drug-facilitated-sexual-assault-using-chloroform
#2
Camille Richeval, Delphine Allorge, Vincent Lopez, Baptiste Boyer, Jean-Michel Gaulier
Despite its well-known sedative properties, chloroform is rarely used for drug-facilitated sexual assault (DFSA) as its administration cannot be achieved without the victim's knowledge: we report an unusual case of DFSA using this solvent. A 26-year-old woman declared that her partner get her to sleep using chloroform the previous night. When she waked up at 3 am, her hands were tied. She immediately suspected violence and sexual penetration. Toxicological blood screening using a liquid chromatography-electrospray coupled tandem mass spectrometry method highlighted the presence of bamifylline and theophylline, two therapeutics of asthma...
November 22, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27881620/catching-fakes-new-markers-of-urine-sample-validity-and-invalidity
#3
Melissa M Goggin, Cheng-Min Tann, Anna Miller, An Nguyen, Gregory C Janis
Urine drug testing is common for workplace drug testing, prescription management, emergency medicine and the criminal justice system. Unsurprisingly, with the significant consequences based upon the results of urine drug testing, a donor in need of concealing the contents of their sample is highly motivated to cheat the process. Procedures and safeguards ensuring sample validity are well known, and include measuring sample temperature at the time of collection, and laboratory measurements of creatinine, specific gravity and pH...
November 22, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27881619/accumulation-and-determination-of-phenylethanolamine-a-residue-in-hair-of-swine-and-sheep
#4
Suo Decheng, Wang Ruiguo, Wang Peilong, Zhao Genlong, Fan Yufei, Fan Xia, Li Yang, Su Xiaoou
The present study proposed the use of liquid chromatography-tandem mass spectrometry to detect the novel β-agonist phenylethanolamine A (PEA) in incurred hair samples of swine and sheep and to assess its accumulation for residue monitoring. The method showed good percent recoveries ranging from 93.2% to 102% and good coefficient of variation at <15%. The experiment was conducted in swine (24 treated and 4 controls) and sheep (3 treated and 1 control). PEA concentration was determined in hair during the treatment...
November 22, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27881618/simultaneous-screening-and-quantification-of-basic-neutral-and-acidic-drugs-in-blood-using-uplc-qtof-ms
#5
Sergei Bidny, Kim Gago, Phuong Chung, Desdemona Albertyn, Daniel Pasin
An analytical method using ultra performance liquid chromatography (UPLC) quadrupole time-of-flight mass spectrometry (QTOF-MS) was developed and validated for the targeted toxicological screening and quantification of commonly used pharmaceuticals and drugs of abuse in postmortem blood using 100 µL sample. It screens for more than 185 drugs and metabolites and quantifies more than 90 drugs. The selected compounds include classes of pharmaceuticals and drugs of abuse such as: antidepressants, antipsychotics, analgesics (including narcotic analgesics), anti-inflammatory drugs, benzodiazepines, beta-blockers, amphetamines, new psychoactive substances (NPS), cocaine and metabolites...
November 22, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27798077/a-fatality-related-to-the-synthetic-opioid-u-47700-postmortem-concentration-distribution
#6
Iain M McIntyre, Ray D Gary, Sandra Joseph, Robert Stabley
In this case report, we present an evaluation of the distribution of postmortem concentrations of 3,4-dichloro-N-[2-(dimethylamino)cyclohexyl]-N-methylbenzamide (U-47700) in a fatality attributed principally to the drug. A man who had a history of drug abuse was found unresponsive and not breathing on his bed. Drug paraphernalia, indicating drug insufflation, was located in the decedent's room. Toxicology screening tests in peripheral blood initially identified U-47700 using an alkaline drug screen with gas chromatography-mass spectrometry (GC-MS) following solid-phase extraction...
October 26, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27798076/etg-and-ets-in-autopsy-blood-samples-with-and-without-putrefaction-using-uplc-ms-ms
#7
Solfrid Hegstad, Lena Kristoffersen, Veronica H Liane, Olav Spigset
Analytical challenges related to postmortem specimens are well known. The degree of putrefaction of the corpse will influence the quality of the blood samples, and both the efficiency of sample preparation and the subsequent chromatographic performance can be affected. An ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS-MS) method was developed and validated for the determination of ethyl glucuronide (EtG) and ethyl sulfate (EtS) in postmortem whole blood. Sample preparation prior to UPLC-MS-MS analysis consisted of protein precipitation and filtration through a phospholipid removal plate...
October 26, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27798073/drugged-drivers-blood-concentrations-in-england-and-wales-prior-to-the-introduction-of-per-se-limits
#8
Brian Rooney, Goncalo Jorge Gouveia, Neville Isles, Lynda Lawrence, Tara Brodie, Zorana Grahovac, Mark Chamberlain, Gavin Trotter
This report details the blood concentration of drugs found in motorists suspected of driving under the influence of drugs from 2010 to 2012 in England and Wales. This study was carried out as new legislation has come into place, setting fixed blood concentration limits for drugs in motorists. These include a cannabis (Δ9-THC) blood concentration of 2 µg/L, amphetamine 250 µg/L, benzoylecgonine (BZE) 50 µg/L, cocaine 10 µg/L, 6-monoacetylmorphine 5 µg/L, morphine 80 µg/L, diazepam 550 µg/L and methadone 500 µg/L...
October 26, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27798075/gc-ms-quantification-method-for-mephedrone-in-plasma-and-urine-application-to-human-pharmacokinetics
#9
Eulàlia Olesti, Mitona Pujadas, Esther Papaseit, Clara Pérez-Mañá, Óscar J Pozo, Magí Farré, Rafael de la Torre
Increasing consumption has been observed among young people of new psychoactive substances, including synthetic cathinone derivatives. The most well known of these is mephedrone whose use has been related to acute intoxication and fatality. Several methods able to detect mephedrone have been reported, although to date, none have been applied to human pharmacokinetic studies in a controlled setting. We developed a gas chromatography-mass spectrometry technique for mephedrone quantification in human plasma and urine...
October 23, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27798072/impact-of-expanding-elisa-screening-in-duid-investigations-to-include-carisoprodol-meprobamate-and-zolpidem
#10
Aileen Lu, Karen S Scott, Aya Chan-Hosokawa, Barry K Logan
In 2013, the National Safety Council's Alcohol Drugs and Impairment Division added zolpidem and carisoprodol and its metabolite meprobamate to the list of Tier 1 drugs that should be tested for in all suspected drug impaired driving and motor vehicle fatality investigations. We describe the validation of an enzyme linked immunosorbent assays (ELISA) for both drugs in whole blood, and the utilization of the ELISA to assess their positivity in a sample of 322 suspected impaired driving cases that was retrospectively screened using the validated assays...
October 23, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27798074/stability-of-tetrahydrocannabinol-and-cannabidiol-in-prepared-quality-control-medible-brownies
#11
Carl E Wolf, Justin L Poklis, Alphonse Poklis
The legalization of marijuana in the USA for both medicinal and recreational use has increased in the past few years. Currently, 24 states have legalized marijuana for medicinal use. The US Drug Enforcement Administration has classified marijuana as a Schedule I substance. The US Food and Drug Administration does not regulate formulations or packages of marijuana that are currently marketed in states that have legalized marijuana. Marijuana edibles or "medibles" are typically packages of candies and baked goods consumed for medicinal as well as recreational marijuana use...
October 18, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27744373/increases-in-serum-growth-hormone-concentrations-associated-with-ghb-administration
#12
Alan D Brailsford, Christiaan Bartlett, Andrew T Kicman, David A Cowan
The administration of gamma-hydroxybutyrate (GHB) has been reported to augment the increase in growth hormone (GH) secretion associated with the onset of sleep. The ability of GHB to stimulate GH production in the absence of sleep in both male and female volunteers was investigated as part of a GHB administration study. Twelve healthy volunteers (six men and six women) were given a small oral dose (25 mg/kg) of GHB (as Xyrem(®)) at 10:00 h. Basal blood samples (as serum) were taken 10 min prior to GHB administration, with additional samples taken at 10, 15, 20, 25, 30, 45, 60, 90, 120, 150, 180, 240, 360 and 480 min post-administration...
October 15, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27744372/fentanyl-norfentanyl-concentrations-during-transdermal-patch-application-lc-ms-ms-urine-analysis
#13
Xiulu Ruan, Srinivas Chiravuri, Alan D Kaye
No abstract text is available yet for this article.
October 15, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27744371/distribution-and-depletion-of-ractopamine-in-goat-plasma-urine-and-various-muscle-tissues
#14
Zhen Zhao, Xu Gu, Xiaoou Su, Junguo Li, Jun Li, Yingchao Dong, Yujuan Yang, Ting Yao, Yuchang Qin
This study investigated the ractopamine (RAC) distribution and depletion process in goat plasma, urine and various muscle tissues which were associated with a potential risk for consumer health. The experiment was carried out in 21 goats (18 treated and 3 controls). Treated animals were administered orally a dose of 1 mg/kg body mass per day for 28 consecutive days and randomly sacrificed on Days 0.25, 1, 3, 7, 14 and 21 of the withdrawal period. RAC in goat samples was analyzed by using ultra-high performance liquid chromatography-quadrupole-orbitrap high-resolution mass spectrometry...
October 15, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27744370/response-to-fentanyl-norfentanyl-concentrations-during-transdermal-patch-application-lc-ms-ms-urine-analysis
#15
Oneka T Cummings, J Enders, G L McIntire
No abstract text is available yet for this article.
October 15, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27737922/new-hair-testing-conclusions
#16
Madeline Montgomery, Marc LeBeau, Cynthia Morris-Kukoski
No abstract text is available yet for this article.
October 13, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27681344/evaluation-of-ethyl-glucuronide-and-ethyl-sulfate-in-calliphora-vicina-as-potential-biomarkers-for-ethanol-intake
#17
Simonetta Lambiase, Angelo Groppi, Denise Gemmellaro, Luca Morini
Ethyl glucuronide (EtG) and ethyl sulfate (EtS) are specific and sensitive biomarkers for the diagnosis of acute or chronic alcohol abuse. Due to postmortem alcohol production in biological tissues, they have recently been evaluated as potential biomarkers of ethanol ingestion. This in vitro study aimed to evaluate all developmental stages of the fly Calliphora vicina L. (Calliphoridae). Different pig substrates were used during the in vitro experiments to rear C. vicina Experiments were performed to: (i) assess the presence of EtG and EtS in larvae, pupae and insects; (ii) study variability due to the substrates characteristics; (iii) evaluate the possibility of false positives due to external alcohol contamination; and (iv) estimate the potential metabolism of ethanol by the insects...
September 27, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27681343/a-fast-and-comprehensive-analysis-of-32-synthetic-cannabinoids-using-agilent-triple-quadrupole-lc-ms-ms
#18
Damon Borg, Anna Tverdovsky, Richard Stripp
Synthetic cannabinoids are a group of psychoactive compounds that mimic the effects of Δ9-tetrahydrocannabinol, the primary psychoactive constituent of marijuana (Cannabis sativa L). The Drug Enforcement Administration has classified many of the most common cannabinoids as Schedule 1 controlled substances. As a result, several novel synthetic cannabinoid series have emerged in the illicit drug market, including PINACA, FUBINACA, PB-22, AKB-48 and multiple derivatives of these compounds. Our laboratory developed and validated an analytical method for the analysis 32 synthetic cannabinoid metabolites in urine samples...
September 27, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27681342/hair-analysis-to-monitor-the-illegal-use-of-salbutamol-in-beef-cattle
#19
Kai Zhang, Xiaowei Liang, Junmin Zhang, Qingyu Zhao, Shengsheng Liu, Chaohua Tang, Chuanyou Su, Qingshi Meng
This study measured the concentrations of salbutamol residues in red and white hair of cattle during and after salbutamol administration. Three Chinese Simmental beef cattle received an oral administration of 150 μg/kg body weight/d salbutamol for 21 consecutive days. Salbutamol concentrations were determined on Days 1, 7, 14, and 21 of administration and on Days 7, 14, 28, 42, and 70 following the last administration dose using ultra-performance liquid chromatography-tandem mass spectrometry. The concentrations of salbutamol that eluted from hair were determined...
September 27, 2016: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/27681341/improved-analytical-approach-based-on-quechers-uhplc-pda-for-quantification-of-fluoxetine-clomipramine-and-their-active-metabolites-in-human-urine-samples
#20
Vera Alves, Carlota Conceição, João Gonçalves, Helena M Teixeira, José S Câmara
This paper reports, for the first time, the development of a modified Quick, Easy, Cheap Effective, Rugged and Safe (QuEChERS) combined with a dispersive SPE (d-SPE) based clean-up procedure as a new and powerful strategy for the simultaneous and efficient isolation of two different antidepressants, fluoxetine and clomipramine, and their active metabolites in human urine samples. A univariate experimental design with four independent variables such as sample volume, extraction solvent, buffered salts and clean-up step, was performed and used to investigate the effect of process variables on the extraction efficiency...
September 27, 2016: Journal of Analytical Toxicology
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