The analysis of verapamil in postmortem specimens by HPLC and GC.

abstract：:This report describes a gas chromatographic procedure using a packed column and a flame ionization detector, which is suitable for the therapeutic monitoring of N-methylformamide (N-MF). N-MF is a polar compound that induces cancer cell maturation in vitro and exhibits antitumor activity with human tumors xenografted ...

journal_title：Journal of analytical toxicology

authors： Griffiths WC,Matook GM,Dexter DL,Crabtree GW,Spremulli EN,Calabresi P,Diamond I

更新日期：1983-03-01 00:00:00

abstract：:Hydrocodone in combination with acetaminophen is commonly used to control moderate pain and is metabolized by cytochrome P4502D6 to form the active metabolite, hydromorphone. The purpose of this study was to determine the metabolic relationship and variability between hydrocodone and its conversion to hydromorphone us...

journal_title：Journal of analytical toxicology

authors： Barakat NH,Atayee RS,Best BM,Pesce AJ

更新日期：2012-05-01 00:00:00

abstract：:A method for the simultaneous extraction of the hallucinogens psilocin, bufotenine, lysergic acid diethylamide (LSD) as well as iso-LSD, nor-LSD and O-H-LSD from hair with hydrochloride acid and methanol is presented. Clean-up of the hair extracts is performed with solid phase extraction using a mixed-mode cation exch...

journal_title：Journal of analytical toxicology

authors： Martin R,Schürenkamp J,Gasse A,Pfeiffer H,Köhler H

更新日期：2015-03-01 00:00:00

abstract：:The collection and analysis of drugs in oral fluid (OF) at the roadside has become more feasible with the introduction of portable testing devices such as the Alere™ DDS®2 Mobile Test System (DDS®2). The objective of this study was to compare the on-site results for the DDS®2 to laboratory-based confirmatory assays wi...

journal_title：Journal of analytical toxicology

authors： Krotulski AJ,Mohr ALA,Friscia M,Logan BK

更新日期：2018-04-01 00:00:00

abstract：:Conditions for the enzymatic hydrolysis of benzodiazepine conjugates were systematically examined. Optimal recovery of the free drugs occurs when 1 mL of urine buffered to pH 4.5 is incubated with 5000 U of Helix pomatia beta-glucuronidase at 56 degrees C for 2 h. Urine specimens containing conjugates of temazepam, ox...

journal_title：Journal of analytical toxicology

authors： Meatherall R

更新日期：1994-11-01 00:00:00

abstract：:Six separate methods to detect oxidants in urine were developed. The presence of the oxidants was established by initial oxidation of ferrous to ferric ion and detecting the ferric by chromogenic oxidation or complex formation. The reagents for chromogenic oxidation were N,N-dimethylamoino-1,4-phenylenediamine (DMPDA)...

journal_title：Journal of analytical toxicology

authors： Paul BD

更新日期：2004-10-01 00:00:00

abstract：:Metabolic transformation of zearalenone (ZEA), a mycotoxin which can contaminate both food and feed, results in the formation of five metabolites, one of them being zeranol (α-ZAL), which can be abused in farm animals as a growth promoter. To the best of our knowledge, there is no analytical method that can distinguis...

journal_title：Journal of analytical toxicology

authors： Vulić A,Lešić T,Kudumija N,Mikuš T,Pleadin J

更新日期：2019-03-01 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 aim of this study was to investigate the early-phase postmortem redistribution of the enantiomers of citalopram (CIT) and its metabolites demethylcitalopram (DCIT) and didemethylcitalopram (DDCIT) in a rat model. Furthermore, we wanted to examine the role of the lungs as a reservoir of postmortem drug release and ...

journal_title：Journal of analytical toxicology

authors： Kugelberg FC,Kingbäck M,Carlsson B,Druid H

更新日期：2005-05-01 00:00:00

abstract：:Since the introduction in 1990, the solid-phase microextraction (SPME) technology has brought significant progress in many fields of forensic sciences due to the versatility of this fast and solventless alternative to conventional extraction techniques. A systematic review about SPME applications in forensic context f...

journal_title：Journal of analytical toxicology

authors： De Giovanni N,Marchetti D

更新日期：2020-04-30 00:00:00

abstract：:A fatal case attributed to flecainide intoxication is presented. Quantitation was by capillary gas chromatography with nitrogen-phosphorus detection. The flecainide concentration in the blood was 13 mg/L as compared to a therapeutic range in serum of 0.2-1.0 mg/L. Flecainide concentrations in other specimens were as f...

journal_title：Journal of analytical toxicology

authors： Levine B,Chute D,Caplan YH

更新日期：1990-09-01 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：:Niflumic acid is a nonsteroidal, anti-inflammatory drug widely prescribed in Greece. We recently noticed that this drug cross-reacts for cannabinoids in a kinetic interaction of microparticles in a solution (KIMS) immunoassay method but does not in an enzyme multiplied immunoassay technique (EMIT) immunoassay method. ...

journal_title：Journal of analytical toxicology

authors： Kovatsi L,Pouliopoulos A,Papadaki A,Samanidou V,Tsoukali H

更新日期：2010-05-01 00:00:00

abstract：:A selective, sensitive, and reliable method was devised to determine concentrations of amitriptyline and its major metabolite, nortriptyline, in human plasma using high-performance liquid chromatography (HPLC) combined with UV and particle beam mass spectrometry (PBMS). Amitriptyline and nortriptyline were effectively...

journal_title：Journal of analytical toxicology

authors： Kudo K,Jitsufuchi N,Imamura T

更新日期：1997-05-01 00:00:00

abstract：:A study of the urinary concentration of fentanyl (F) and its major metabolite norfentanyl (NF) in chronic pain patients treated with the Duragesic continuous release transdermal patches is presented. These patches are available in 10, 20, 30, and 40 cm(2) sizes releasing 25, 50, 75, and 100 microg/h F, respectively. F...

journal_title：Journal of analytical toxicology

authors： Poklis A,Backer R

更新日期：2004-09-01 00:00:00

abstract：:A method for determining the chemical warfare agent soman (GD) in rat plasma has been validated and applied to low-level inhalation exposure studies currently being conducted. This method utilizes a fluoride ion-based regeneration assay with isotope dilution followed by large volume injection gas chromatography with a...

journal_title：Journal of analytical toxicology

authors： Renner JA,Dabisch PA,Evans RA,McGuire JM,Totura AL,Jakubowski EM,Thomson SA

更新日期：2008-01-01 00:00:00

abstract：:A comparison was made of several cannabinoid urine assays. Two hundred randomly selected urine specimens were initially screened by two enzyme immunoassays (EMIT-st and EMIT-d.a.u.) and a radioimmunoassay (Abuscreen RIA). Selected specimens found positive by any of these methods were further analyzed by gas-liquid chr...

journal_title：Journal of analytical toxicology

authors： Irving J,Leeb B,Foltz RL,Cook CE,Bursey JT,Willette RE

更新日期：1984-07-01 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：:While earlier studies have attempted to resolve the challenges encountered when interpreting gamma-hydroxybutyric acid (GHB) concentrations in hair (primarily due to its endogenous presence), few have had large sample sizes. The first objective of this study was to evaluate the inter-individual variation of endogenous...

journal_title：Journal of analytical toxicology

authors： Thomas JL,Strickland EC,Lloyd EW,Donnelly CC,Rankoth A,Pieczonka SM,Colpoys C,Smith MA,LeBeau MA,Montgomery MA,Karas RP,Peters EM,Miller ML

更新日期：2020-10-12 00:00:00

abstract：:Due to the lack of certified reference material, a reliable quantification in complex postmortem matrices can only be performed either by the addition of isotope-labelled standards or by the standard addition method. Although standard addition is a basic quantification procedure, its practical implementation is challe...

journal_title：Journal of analytical toxicology

authors： Reiter B,Stimpfl T

更新日期：2015-11-01 00:00:00

abstract：:An automated solid-phase extraction (SPE) protocol followed by gas chromatography coupled with tandem mass spectrometry was developed for quantification of caffeine, cyamemazine, meprobamate, morphine and 6-monoacetylmorphine (6-MAM) in 11 biological matrices [blood, urine, bile, vitreous humor, liver, kidney, lung an...

journal_title：Journal of analytical toxicology

authors： Bévalot F,Bottinelli C,Cartiser N,Fanton L,Guitton J

更新日期：2014-06-01 00:00:00

abstract：:Vitreous humor is a potential alternative matrix for postmortem toxicology drug screens when peripheral blood is unavailable. It is easily and reliably collected and may not suffer from the same postmortem redistribution as seen in blood. Here, we compared the concentrations of 7 acidic drugs (acetaminophen, ibuprofen...

journal_title：Journal of analytical toxicology

authors： Hubbard JA,Navarrete AL,Fitzgerald RL,McIntyre IM

更新日期：2019-11-06 00:00:00

abstract：:Part I. Expert 4: The object of this study was to investigate the applicability of commercially available expert system shells to interpretation in forensic toxicology. Amitriptyline toxicology was selected as a pilot trial. Blood and tissue concentrations of amitriptyline and nortriptyline in fatal and nonfatal amitr...

journal_title：Journal of analytical toxicology

authors： Spiehler V,Spiehler E,Osselton MD

更新日期：1988-07-01 00:00:00

abstract：:Sampling and drug stability in oral fluid (OF) are crucial factors when interpreting forensic toxicological analysis, mainly because samples may not be analyzed immediately after collection, potentially altering drug concentrations. Therefore, the stability of some common drugs of abuse (morphine, codeine, 6-monoacety...

journal_title：Journal of analytical toxicology

authors： Marchei E,Malaca S,Graziano S,Gottardi M,Pichini S,Busardò FP

更新日期：2020-07-31 00:00:00

abstract：:We developed a high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS-MS) method to measure metabolites of atrazine, phenylurea, and sulfonylurea herbicides in human urine. The metabolites measured in the method include atrazine mercapturate, desethyl atrazine, and desisopropyl atrazine as markers of...

journal_title：Journal of analytical toxicology

authors： Nguyen JV,Olsson AO,Bravo R,Needham LL,Barr DB

更新日期：2007-05-01 00:00:00

abstract：:Because mycotoxins occur worldwide in grain and grain products, evaluating their effects on the health of the population has become important. The development of a high performance liquid chromatographic (HPLC) procedure was investigated for the analysis of aflatoxin B1, citrinin, and ochratoxin A, from hydrolyzed hum...

journal_title：Journal of analytical toxicology

authors： Orti DL,Hill RH Jr,Liddle JA,Needham LL,Vickers L

更新日期：1986-03-01 00:00:00

abstract：:Caffeine is the most widely consumed drug in the world with coffee representing a major source of intake. Despite widespread availability, various medical conditions necessitate caffeine-restricted diets. Patients on certain prescription medications are advised to discontinue caffeine intake. Such admonition has impli...

journal_title：Journal of analytical toxicology

authors： McCusker RR,Fuehrlein B,Goldberger BA,Gold MS,Cone EJ

更新日期：2006-10-01 00:00:00

abstract：:3,4-Methylenedioxymethamphetamine (MDMA), or ecstasy, is excreted as unchanged drug, 3,4-methylenedioxyamphetamine (MDA), and free and glucuronidated/sulfated 4-hydroxy-3-methoxymethamphetamine (HMMA), and 4-hydroxy-3-methoxyamphetamine (HMA) metabolites. The aim of this paper is to describe the pattern and timeframe ...

journal_title：Journal of analytical toxicology

authors： Abraham TT,Barnes AJ,Lowe RH,Kolbrich Spargo EA,Milman G,Pirnay SO,Gorelick DA,Goodwin RS,Huestis MA

更新日期：2009-10-01 00:00:00

abstract：:Ethiofencarb is one of the carbamate compounds, which are, in general, less toxic than organophosphorus insecticides. This is due to their reversible acetylcholinesterase inhibition and relative inability to cross the blood-brain barrier. Generally, ethiofencarb is regarded to be of low toxicity (LD(50) > 200 mg/kg); ...

journal_title：Journal of analytical toxicology

authors： Al-Samarraie MS,Karinen R,Rognum T,Hasvold I,Opdal Stokke M,Christophersen AS

更新日期：2009-09-01 00:00:00

abstract：:A gas chromatographic-chemical ionization mass spectrometric (GC-CIMS) method is described for the determination of cocaine, benzoylecgonine, and norcocaine. The procedure uses stable isotopes as internal standards and a mixture of methane-ammonia as chemical ionization reagent gas. Run-to-run and within-run coefficie...

journal_title：Journal of analytical toxicology

authors： Chinn DM,Crouch DJ,Peat MA,Finkle BS,Jennison TA

更新日期：1980-01-01 00:00:00