Simultaneous determination of methamphetamine and its metabolites in monkey urine by gas chromatography/mass spectrometry with selected ion monitoring.

abstract：:An ultra-performance liquid chromatography-tandem mass spectrometry method was developed and validated for the quantification of 25 common pharmaceuticals in whole blood. The selected pharmaceuticals represent the most frequently detected drugs in our forensic laboratory with basic properties such as analgesics, antid...

journal_title：Journal of analytical toxicology

authors： Nielsen MK,Johansen SS

更新日期：2012-09-01 00:00:00

abstract：:A liquid chromatographic-mass spectrometric assay with atmospheric pressure chemical ionization is presented for quantification (selected-ion mode) of tramadol (T) and O-desmethyltramadol (ODT) in blood plasma after liquid-liquid extraction. The enantiomeric separation was achieved on a Chiralpak AD column containing ...

journal_title：Journal of analytical toxicology

authors： Musshoff F,Madea B,Stuber F,Stamer UM

更新日期：2006-09-01 00:00:00

abstract：:Urine specimens containing 11 common beta blockers were processed using solid-phase extraction technology to extract the drugs from the urine matrix, then converted to their cyclic methaneboronates by treatment with methaneboronic acid in ethyl acetate. The compounds tested included acebutolol, atenolol, alprenolol, b...

journal_title：Journal of analytical toxicology

authors： Branum GD,Sweeney S,Palmeri A,Haines L,Huber C

更新日期：1998-03-01 00:00:00

abstract：:The objective was to develop a simple routine method for quantitative measurement of endogenous formic acid in plasma and whole blood using headspace gas chromatography-flame ionization detection. (GC-FID). Two-hundred microliters of sample was placed in a 1-mL glass vial. Fifty microliters of aqueous ethanol (10%) wa...

journal_title：Journal of analytical toxicology

authors： Sokoro A,Lehotay D,Eichhorst J,Treble R

更新日期：2007-07-01 00:00:00

abstract：:Fentanyl and its analogs, such as acetylfentanyl, have become a concern for potential abuse. Fentanyl compliance monitoring and urine drug testing are becoming increasingly necessary; however, a limited number of fentanyl immunoassays have been validated for clinical use. The purpose of this study was to validate the ...

journal_title：Journal of analytical toxicology

authors： Wang BT,Colby JM,Wu AH,Lynch KL

更新日期：2014-11-01 00:00:00

abstract：:A clinical study was designed to determine if there was a predictable relationship between saliva and plasma codeine concentrations. Drug-free volunteers (n = 17) were administered a 30-mg dose of liquid codeine phosphate. Plasma and saliva specimens were collected at various times for 24 h after administration. Plasm...

journal_title：Journal of analytical toxicology

authors： O'Neal CL,Crouch DJ,Rollins DE,Fatah A,Cheever ML

更新日期：1999-10-01 00:00:00

abstract：:The effect of long-term room temperature storage on the stability of ethanol in whole blood specimens was investigated. One hundred and seventeen preserved whole blood case samples (110 of 117 with two tubes of blood in each case) were used for this study. One tube from each case was initially tested for blood alcohol...

journal_title：Journal of analytical toxicology

authors： Tiscione NB,Vacha RE,Alford I,Yeatman DT,Shan X

更新日期：2015-07-01 00:00:00

abstract：:To evaluate liquid chromatography-high-resolution mass spectrometry (LC-HR-MS) for urine toxicology screening, 29 analytes were quantitated in 152 urine specimens from patients with chronic pain using two unique mass spectrometry platforms. De-identified specimens were quantitated in April of 2011 by liquid chromatogr...

journal_title：Journal of analytical toxicology

authors： Crews BO,Pesce AJ,West R,Nguyen H,Fitzgerald RL

更新日期：2012-11-01 00:00:00

abstract：:Synthetic cathinones have recently emerged as a substitute for common drugs of abuse. Synthetic cathinones can elicit powerful adverse effects such as delusions, hallucinations and potentially dangerous behavior. To develop a method to analyze 10 synthetic cathinones in oral fluid, we implemented a combined approach o...

journal_title：Journal of analytical toxicology

authors： Amaratunga P,Lorenz Lemberg B,Lemberg D

更新日期：2013-11-01 00:00:00

abstract：:A sensitive and reproducible gas chromatographic procedure for the quantitative determination of urinary o-cresol is described. The first step involves acid hydrolysis (2N HCl, 100 degrees C, 10 min), which yields unconjugated o-cresol. After extraction (methylene chloride, pH 2), the organic layer is concentrated by ...

journal_title：Journal of analytical toxicology

authors： Truchon G,Tardif R,Brodeur J

更新日期：1996-09-01 00:00:00

abstract：:Baclofen (Lioresal), a lipophilic analogue of c-aminobutyric acid (GABA), and carisoprodol (Soma), a central nervous system depressant with an unknown mechanism of pharmacologic action, are categorized as muscle relaxants. Baclofen is used clinically in the management of spasticity and its sequelae secondary to severe...

journal_title：Journal of analytical toxicology

authors： Miksa IR,Poppenga RH

更新日期：2003-07-01 00:00:00

abstract：:Radioactive methadone, phenytoin, phenobarbital, and diazepam were easily and efficiently removed from human urine samples by adsorption on C18 bonded silica phases. These techniques were simpler than conventional extractions at pH 9.3 or 5.2 with dichloromethane, XAD-2 and methanol, or Celite 560 and dichloromethane....

journal_title：Journal of analytical toxicology

authors： Hyde PM

更新日期：1985-11-01 00:00:00

abstract：:Vitreous humor is a fluid contained in the eye that is largely composed of water. The advantages of vitreous humor as a specimen for postmortem drug analysis include its relatively low susceptibility to contamination and the ability to analyze vitreous humor with little or no pretreatment. The postmortem analysis of e...

journal_title：Journal of analytical toxicology

authors： Cox D,Jufer Phipps RA,Levine B,Jacobs A,Fowler D

更新日期：2007-10-01 00:00:00

abstract：:The purpose of this study was to determine the performance characteristics of the Cozart Methadone Microplate ELISA assay for the detection of methadone and methadone metabolites in hair specimens. One hundred and ten hair specimens were collected from volunteers (n=46) with a history of drug use and from drug-related...

journal_title：Journal of analytical toxicology

authors： Cooper G,Wilson L,Reid C,Baldwin D,Hand C,Spiehler V

更新日期：2005-10-01 00:00:00

abstract：:The gelsemium plants are highly poisonous but toxicological evaluation of suspected poisoning cases has been hampered by the chemical complexity of the gelsemium toxins involved. A novel liquid chromatography-tandem mass spectrometry protocol was optimized for the collective detection of gelsemine and related alkaloid...

journal_title：Journal of analytical toxicology

authors： Lai CK,Chan YW

更新日期：2009-01-01 00:00:00

abstract：:Screening for emerging drugs of abuse, specifically synthetic cathinones and synthetic cannabinoids, is difficult for high-throughput laboratories as immunoassay kits are often unavailable. Consequently, most laboratories employ liquid chromatography-tandem mass spectrometry (LC-MS-MS) screening, which can be complex ...

journal_title：Journal of analytical toxicology

authors： Neifeld JR,Regester LE,Holler JM,Vorce SP,Magluilo J Jr,Ramos G,Bosy TZ

更新日期：2016-06-01 00:00:00

abstract：:In preparation for a treatment program concerning the medical coprescription of heroin and methadone to treatment-resistant addicts in the Netherlands, we studied a novel strategy for monitoring co-use of illicit (nonprescribed) heroin. A deuterated analogue of heroin was added (1:20) to pharmaceutical, smokable heroi...

journal_title：Journal of analytical toxicology

authors： Klous MG,Rook EJ,Hillebrand MJ,van den Brink W,van Ree JM,Beijnen JH

更新日期：2005-09-01 00:00:00

abstract：:Analytical methods were developed to determine the presence of ethylenediaminetetraacetic acid (EDTA) in dried bloodstains to provide probative information when allegations of evidence tampering have been made in criminal cases. A simple screening method using ion chromatography to analyze stains was found to be quant...

journal_title：Journal of analytical toxicology

authors： Miller ML,McCord BR,Martz R,Budowle B

更新日期：1997-11-01 00:00:00

abstract：:The National Institute of Standards and Technology (formerly the National Bureau of Standards), in cooperation with the College of American Pathologists (CAP), has certified the concentrations of phencyclidine (PCP) in two new reference materials (RMs). One of these materials is Standard Reference Material (SRM) 1511,...

journal_title：Journal of analytical toxicology

authors： Tai SS,Christensen RG,Coakley K,Ellerbe P,Long T,Welch MJ

更新日期：1996-01-01 00:00:00

abstract：:The application of gas chromatography/mass spectrometry (GC/MS) for the simultaneous quantitation of seven commonly encountered urinary benzodiazepine metabolites is described. After comparison of the signal-to-noise ratios of high mass ions of benzodiazepines using electron impact (EI), positive chemical ionization (...

journal_title：Journal of analytical toxicology

authors： Fitzgerald RL,Rexin DA,Herold DA

更新日期：1993-10-01 00:00:00

abstract：:Methods for extraction of cocaine, some of its metabolites, morphine, and codeine from hair and methods for analyzing the extracts have been investigated. Results of these studies have shown that extractions with 0.1N HCl are efficient at removing the target compounds from hair and appear to be as effective as enzymat...

journal_title：Journal of analytical toxicology

authors： Welch MJ,Sniegoski LT,Allgood CC,Habram M

更新日期：1993-11-01 00:00:00

abstract：:A new method was developed to apply the advantages of automated gas chromatographic headspace analysis to delayed measurement of alcohol in whole breath (W-B). End-expiratory breath and vapor-alcohol samples were collected in sealed, heated 22-mL glass vials, stored for 0-15 days, and thereafter analyzed for alcohol b...

journal_title：Journal of analytical toxicology

authors： Dubowski KM,Essary NA

更新日期：1982-09-01 00:00:00

abstract：:An existing GC-MS method for detecting benzoylecgonine (BZE) in urine was modified by changing derivatizing reagents. This method modification presents a cost-effective alternative derivatization procedure for the detection of BZE in urine by GC-MS. The combination of pentafluoropropanol and acetic anhydride was found...

journal_title：Journal of analytical toxicology

authors： Serafin MC,Paulemon KM,Fuller ZJ,Bronner WE

更新日期：2017-05-01 00:00:00

abstract：:1-(4-Methylphenyl)-2-pyrrolidin-1-ylhexan-1-one (4'-methyl-alpha-pyrrolidinohexanophenone, MPHP) is a new designer drug that appeared on the illicit drug market. It is mainly metabolized to 4'-hydroxymethyl-alpha-pyrrolidinohexanophenone (HO-MPHP) followed by oxidation to the respective carboxylic acid. For studies on...

journal_title：Journal of analytical toxicology

authors： Peters FT,Dragan CA,Kauffels A,Schwaninger AE,Zapp J,Bureik M,Maurer HH

更新日期：2009-05-01 00:00:00

abstract：:3,4-Methylenedioxymethamphetamine (MDMA), a commonly encountered drug of abuse, has been shown in a variety of studies to cause neurotoxic effects. Because MDMA itself is not neurotoxic, identifying the potential neurotoxic metabolite(s) was of significant importance. Evaluation of urine and plasma concentrations of M...

journal_title：Journal of analytical toxicology

authors： Valtier S,Phelix CF,Cody JT

更新日期：2007-04-01 00:00:00

abstract：:Methoxphenidine (MXP, 2-MeO-diphenidine) is a dissociative anaesthetic drug of the diarylethylamine type, recently introduced for recreational purposes through the online-based sale of new psychoactive substances (NPS). The concentration of MXP in hair has never been reported, either in cases of chemsex use or in fata...

journal_title：Journal of analytical toxicology

authors： Goncalves R,Castaing N,Titier K,Dumestre-Toulet V

更新日期：2021-02-01 00:00:00

abstract：:Although many deaths occur annually from heroin intoxication, the presence of heroin has not been reported in postmortem tissues. Recognizing heroin's susceptibility to rapid chemical and metabolic hydrolysis, extraction procedures were developed for the efficient recovery of heroin, 6-acetylmorphine, and morphine fro...

journal_title：Journal of analytical toxicology

authors： Goldberger BA,Cone EJ,Grant TM,Caplan YH,Levine BS,Smialek JE

更新日期：1994-01-01 00:00:00

abstract：:Quetiapine fumarate (Seroquel) is a dibenzothiazepine psychotropic agent that was introduced in 1997 for treating psychoses. Quetiapine is being found with increasing frequency in postmortem cases in Virginia. We report the postmortem results and histories of 20 quetiapine cases from the Office of the Chief Medical Ex...

journal_title：Journal of analytical toxicology

authors： Flammia DD,Valouch T,Venuti S

更新日期：2006-05-01 00:00:00

abstract：:This study identified ethyl sulfate (EtS) in human urine and compared the excretion characteristics of EtS with that of ethanol and ethyl glucuronide (EtG). Urine samples were collected from healthy subjects after a single ethanol dose, and also selected from routine clinical samples. Simultaneous analysis of EtS and ...

journal_title：Journal of analytical toxicology

authors： Helander A,Beck O

更新日期：2005-07-01 00:00:00

abstract：:A 5-mg dose of cocaine free base applied to the volar forearm skin surface of a volunteer resulted in a maximal urinary benzoylecgonine concentration of 55 ng/mL at 48 h, using discrete urine specimens. A total of 58 micrograms of benzoylecgonine, representing 1.2% of the dose, was excreted in the 96-h urine. An ident...

journal_title：Journal of analytical toxicology

authors： Baselt RC,Chang JY,Yoshikawa DM

更新日期：1990-11-01 00:00:00