Norcocaine and cocaethylene distribution patterns in hair samples from light, moderate, and heavy cocaine users.

Abstract:

:Even though hair analysis often seems to be the best choice for retrospective monitoring of cocaine intake, differentiating between incorporated cocaine and external contamination is widely debated. In this study we report results obtained in 90 hair samples from addicts. All samples were analyzed for cocaine, benzoylecgonine, norcocaine, cocaethylene, and tropococaine by gas chromatography-mass spectrometry (GC-MS) techniques coupled with direct immersion solid-phase micro-extraction. Cocaine concentrations were stratified into three classes of usage: light (0.5-3 ng/mg), moderate (3.1-10 ng/mg) and heavy (10.1-40 ng/mg). The Substance Abuse and Mental Health Services Administration cut-off criteria for establishing active cocaine use were applied to the results. For all samples criteria were cocaine levels above 0.5 ng/mg (ranging from 1.63 to 39.29 ng/mg, mean 9.49 ng/mg), benzoylecgonine concentrations ≥ 0.05 ng/mg (ranging from 0.19 to 5.77 ng/mg, mean 1.40), and benzoylecgonine to cocaine % ratio ≥5% (from 6.43 to 26.09%). Norcocaine was present in 58.9% of samples (concentration range: 0.22-3.14 ng/mg) and was strongly predictive only of heavy cocaine use (sensitivity 100% for cocaine concentrations above 9.58 ng/mg). Twenty hair samples from moderate and heavy users tested positive for cocaethylene (concentration range: 0.22-1.98 ng/mg, mean 0.73 ng/mg). This study on hair samples with no chance of false positive cases highlights the very limited applications of testing minor cocaine metabolites for definitive proof of active cocaine consumption. © 2015 The Authors. Drug Testing and Analysis Published by John Wiley & Sons, Ltd.

journal_name

Drug Test Anal

authors

Gambelunghe C,Rossi R,Aroni K,Gili A,Bacci M,Pascali V,Fucci N

doi

10.1002/dta.1903

subject

Has Abstract

pub_date

2017-02-01 00:00:00

pages

161-167

issue

2

eissn

1942-7603

issn

1942-7611

journal_volume

9

pub_type

杂志文章
  • Chronicle of an unintentional MDMA intoxication of a field hockey team to prevent its qualification for the Beijing 2008 Olympics: A case report.

    abstract::Current doping trends overshadow the traditional interpretation of using prohibited performance-enhancing drugs to improve training and/or sports results. Its definition has evolved due to several recent cases of unconventional manipulation in sports. In this article, we present a case study of an intentional intoxica...

    journal_title:Drug testing and analysis

    pub_type: 历史文章,杂志文章

    doi:10.1002/dta.2753

    authors: Baltazar-Martins G,Del Mar Plata M,Muñoz-Guerra J,Argaya J,Del Coso J

    更新日期:2020-05-01 00:00:00

  • 5-(2-Aminopropyl)indole (5-IT): a psychoactive substance used for recreational purposes is an inhibitor of human monoamine oxidase (MAO).

    abstract::5-(2-Aminopropyl)indole (5-IT) is a psychoactive compound that has recently been associated with several fatal and non-fatal intoxications in a number of European countries. There are indications that acute effects may include symptoms of monoaminergic (e.g. serotonin) toxicity and one mechanism involved in the increa...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1530

    authors: Herraiz T,Brandt SD

    更新日期:2014-07-01 00:00:00

  • Hair analysis as a useful procedure for detection of vapour exposure to chemical warfare agents: simulation of sulphur mustard with methyl salicylate.

    abstract::Chemical warfare agents (CWA) are highly toxic compounds which have been produced to kill or hurt people during conflicts or terrorist attacks. Despite the fact that their use is strictly prohibited according to international convention, populations' exposure still recently occurred. Development of markers of exposure...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1659

    authors: Spiandore M,Piram A,Lacoste A,Josse D,Doumenq P

    更新日期:2014-06-01 00:00:00

  • Characterization of in vitro generated metabolites of the selective androgen receptor modulators S-22 and S-23 and in vivo comparison to post-administration canine urine specimens.

    abstract::Selective androgen receptor modulators (SARMs) have great therapeutic potential in various diseases including cancer cachexia, sarcopenia, and osteoporosis, and the number of drug candidates has been growing over the last decade. The SARM drug candidates S-22 and S-23 belong to one of the most advanced groups of andro...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.211

    authors: Thevis M,Gerace E,Thomas A,Beuck S,Geyer H,Schlörer N,Kearbey JD,Dalton JT,Schänzer W

    更新日期:2010-11-01 00:00:00

  • Segmental analysis of antidepressant and antipsychotic drugs in the hair of schizophrenic patients.

    abstract::Hair analysis is useful for documenting long-term exposure to drugs. The potential of hair analysis for therapeutic drug monitoring within the forensic field has been studied, but reference values for some antidepressants and antipsychotics in the hair of individuals undergoing chronic therapy are still lacking. In th...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.2754

    authors: Wang X,Zhuo Y,Tang X,Qiang H,Liu W,Wu H,Xiang P,Duan G,Shen M

    更新日期:2020-04-01 00:00:00

  • Synthesis and characterization of 5-methoxy-2-methyl-N,N-dialkylated tryptamines.

    abstract::The absence of reference material is a commonly experienced difficulty among medical and forensic professionals tasked with identifying new psychoactive substances that are encountered for the first time. The identification of newly emerging substances lies at the heart of forensic and clinical analysis, and a proacti...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.398

    authors: Brandt SD,Tearavarich R,Dempster N,Cozzi NV,Daley PF

    更新日期:2012-01-01 00:00:00

  • Docetaxel epimerization in silicone films: a case of drug excipient incompatibility.

    abstract::Docetaxel (DTX) is an anti-cancer compound derived from 10-deacetyl baccatin III which is indicated for treatment of breast, lung, prostate, gastro-esophageal, and head and neck cancers. Epimerization of DTX at the C-7 hydroxyl position has intrigued chemists and has been implicated in loss of potency, as well as in t...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1617

    authors: Mohsin S,Arellano IH,Choudhury NR,Garg S

    更新日期:2014-10-01 00:00:00

  • An investigation of the stability of emerging new psychoactive substances.

    abstract::The evolving nature of new psychoactive substances (NPS) - often referred to as 'legal highs', 'designer drugs' or 'bath salts' - presents an evolving challenge for toxicologists. Apart from the detection and identification of these compounds, further analytical challenges may arise from the presence of possible metab...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1576

    authors: Soh YN,Elliott S

    更新日期:2014-07-01 00:00:00

  • Differences in sialic acid O-acetylation between human urinary and recombinant erythropoietins: a possible mass spectrometric marker for doping control.

    abstract::Development of a mass spectrometric method for the unambiguous detection of doping with recombinant human erythropoietins (rhEPO) has been attempted for many years. Unfortunately, progress in this field was hampered by the unavailability of highly purified human endogenous EPOs (urinary[uhEPO], serum/plasma EPO)--a pr...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1563

    authors: Reichel C

    更新日期:2013-11-01 00:00:00

  • Seven years of workplace drug testing in Italy: A systematic review and meta-analysis.

    abstract::In Italy, Workplace Drug Testing (WDT) has been compulsory by law for specific categories of workers since 2008, offering the opportunity to compare studies conducted within a single regulatory framework. The aims of this paper are to estimate the overall prevalence of WDT positivity (at screening survey) among Italia...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章,meta分析,评审

    doi:10.1002/dta.2189

    authors: Rosso GL,Montomoli C,Morini L,Candura SM

    更新日期:2017-06-01 00:00:00

  • UHPLC-MS/MS and UHPLC-HRMS identification of zolpidem and zopiclone main urinary metabolites and method development for their toxicological determination.

    abstract::Zolpidem and zopiclone (Z-compounds) are non-benzodiazepine hypnotics of new generation that can be used in drug-facilitated sexual assault (DFSA). Their determination in biological fluids, mainly urine, is of primary importance; nevertheless, although they are excreted almost entirely as metabolites, available method...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1470

    authors: Strano Rossi S,Anzillotti L,Castrignanò E,Frison G,Zancanaro F,Chiarotti M

    更新日期:2014-03-01 00:00:00

  • Return of the lysergamides. Part VI: Analytical and behavioural characterization of 1-cyclopropanoyl-d-lysergic acid diethylamide (1CP-LSD).

    abstract::Lysergic acid diethylamide (LSD) is a prototypical serotonergic psychedelic drug and the subject of many clinical investigations. In recent years, a range of lysergamides has emerged with the production of some being inspired by the existing scientific literature. Others, for example various 1-acyl substituted lyserga...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.2789

    authors: Brandt SD,Kavanagh PV,Westphal F,Stratford A,Odland AU,Klein AK,Dowling G,Dempster NM,Wallach J,Passie T,Halberstadt AL

    更新日期:2020-06-01 00:00:00

  • Sensitive and selective spectrophotometric assay of gabapentin in capsules using sodium 1, 2-naphthoquinone-4-sulfonate.

    abstract::A simple, sensitive, and selective spectrophotometric method has been developed for the determination of gabapentin (GBP) in capsules. The method is based on the reaction of GBP and sodium 1,2-naphthoquinone-4-sulfonate (NQS) in the presence of Clark and Lubs buffer of pH 11 to form an orange-coloured product which wa...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.242

    authors: Abdulrahman SA,Basavaiah K

    更新日期:2011-10-01 00:00:00

  • Expanding analytical possibilities concerning the detection of stanozolol misuse by means of high resolution/high accuracy mass spectrometric detection of stanozolol glucuronides in human sports drug testing.

    abstract::Anabolic-androgenic steroids (AAS) represent one of the most frequently detected classes of prohibited substances in doping controls. Due to their long-lasting beneficial effects on athletic performance, utmost retrospectivity via urine analysis is desirable and accomplished by targeting long-term metabolites of the r...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1516

    authors: Schänzer W,Guddat S,Thomas A,Opfermann G,Geyer H,Thevis M

    更新日期:2013-11-01 00:00:00

  • Screening of testosterone esters in human plasma.

    abstract::The detection of an intact ester of testosterone in plasma is leading towards unequivocal proof of the administration of exogenous testosterone. In the current study, a sensitive screening method for the detection of nine testosterone esters in human plasma was developed. By preparing oxime derivatives of intact testo...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1560

    authors: Forsdahl G,Vatne HK,Geisendorfer T,Gmeiner G

    更新日期:2013-11-01 00:00:00

  • Mildronate (Meldonium) in professional sports - monitoring doping control urine samples using hydrophilic interaction liquid chromatography - high resolution/high accuracy mass spectrometry.

    abstract::To date, substances such as Mildronate (Meldonium) are not on the radar of anti-doping laboratories as the compound is not explicitly classified as prohibited. However, the anti-ischemic drug Mildronate demonstrates an increase in endurance performance of athletes, improved rehabilitation after exercise, protection ag...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1788

    authors: Görgens C,Guddat S,Dib J,Geyer H,Schänzer W,Thevis M

    更新日期:2015-11-01 00:00:00

  • The Probenecid-story - A success in the fight against doping through out-of-competition testing.

    abstract::The effectiveness of doping control in sport has been improved continuously during the past 50 years. One of the major steps forward was the introduction of unannounced and targeted out-of-competition testing in order to control the misuse of anabolic-androgenic steroids (AAS), mainly during the end of the 1980s. It a...

    journal_title:Drug testing and analysis

    pub_type: 信件

    doi:10.1002/dta.2727

    authors: Hemmersbach P

    更新日期:2020-05-01 00:00:00

  • GHB and synthetic cathinones: clinical effects and potential consequences.

    abstract::Designer drugs belong to a group of legally or illegally produced substances that are structurally and pharmacologically very similar to illicit drugs. In the past, designer drugs were often used during all-night dance parties, but they are now consumed in multiple settings from college bars to parks to private house ...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章,评审

    doi:10.1002/dta.210

    authors: Karila L,Reynaud M

    更新日期:2011-09-01 00:00:00

  • Meconium drug testing reveals maternal misuse of medicinal opioids among addicted mothers.

    abstract::Meconium drug testing is a non-invasive method to detect prenatal drug exposure, which can cause severe problems for the infant, indicating the need for follow-up measures to ensure the welfare of the child. Meconium samples for drug testing were collected from 143 infants as part of routine clinical work among addict...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章,多中心研究

    doi:10.1002/dta.1459

    authors: Launiainen T,Nupponen I,Halmesmäki E,Ojanperä I

    更新日期:2013-07-01 00:00:00

  • Nanoparticle technology: amplifying the effective sensitivity of biomarker detection to create a urine test for hGH.

    abstract::Several clinical-grade immunoassays exist for the specific measurement of hGH or its isoforms in blood but there is an urgent need to apply these same reliable assays to the measurement of hGH in urine as a preferred 'non-invasive' biofluid. Unfortunately, conventional hGH immunoassays cannot attain the sensitivity re...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章,评审

    doi:10.1002/dta.96

    authors: Fredolini C,Tamburro D,Gambara G,Lepene BS,Espina V,Petricoin EF 3rd,Liotta LA,Luchini A

    更新日期:2009-09-01 00:00:00

  • Liposomes as potential masking agents in sport doping. Part 2: Detection of liposome-entrapped haemoglobin by flow cytofluorimetry.

    abstract::This work presents an analytical procedure for the identification and characterization of liposome-entrapped haemoglobins, based on flow cytofluorimetry. Flow cytofluorimetric detection is carried out following labelling by two distinct fluorescent reagents, an anti-haemoglobin antibody, fluorescein isothiocyanate con...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1956

    authors: Esposito S,Colicchia S,de la Torre X,Donati F,Mazzarino M,Botrè F

    更新日期:2017-02-01 00:00:00

  • Stability-indicating chemometric methods for the determination of pyritinol dihydrochloride.

    abstract::Three multivariate calibration methods, including classical least square with nonzero intercept (CLS), principal component regression (PCR) and partial least square (PLS), have been used for the determination of pyritinol dihydrochloride in the presence of its degradation product. The CLS, PCR and PLS techniques are u...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.37

    authors: El-Sayed MA,Abdul-Azim Mohammad M

    更新日期:2009-05-01 00:00:00

  • Systematic investigations of novel validity parameters in urine drug testing and prevalence of urine adulteration in a two-year cohort.

    abstract::Urinalysis is well established for drug screening. Various methods of urine adulteration such as dilution, addition of oxidative/reductive chemicals or detergents, and handing over urine-like fluids are used to circumvent a positive screen. Validity parameters such as determination of pH, gravidity, urine temperature,...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.2447

    authors: Kluge J,Rentzsch L,Remane D,Peters FT,Wissenbach DK

    更新日期:2018-10-01 00:00:00

  • Identification of porcine relaxin in plasma by liquid chromatography-high resolution mass spectrometry.

    abstract::Relaxin (RLX) has demonstrated diverse pharmacological effects in various scientific and clinical studies. The emergence of porcine relaxin (pRLX) has raised concerns on the doping potential of pRLX. There have also been speculations in the horseracing industry on its covert use. To control the abuse of pRLX in equine...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.2143

    authors: Wong ASY,Ho ENM,Kwok WH,Leung GNW,Shen Y,Qi RZ,Yue SK,Wan TSM

    更新日期:2017-09-01 00:00:00

  • Detection of formestane abuse by mass spectrometric techniques.

    abstract::Formestane (4-hydroxy-androstenedione) is an aromatase inhibitor prohibited in sports and included, since 2004, in the list of prohibited substances updated yearly by the World Anti-Doping Agency (WADA). Since the endogenous production of formestane has been described, it is mandatory for the anti-doping laboratories ...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1759

    authors: de la Torre X,Colamonici C,Curcio D,Jardines D,Molaioni F,Parr MK,Botrè F

    更新日期:2014-11-01 00:00:00

  • Voltammetric determination of promethazine hydrochloride at a multi-wall carbon nanotube modified glassy carbon electrode.

    abstract::A simple and sensitive method is described for voltammetric determination of promethazine hydrochloride (PMZ), a widely used phenothiazine drug, based on its electrochemical oxidation at a multi-wall carbon nanotube (MWCNT) modified glassy carbon electrode (GCE). Compared with bare GCE, the MWCNT-modified GCE exhibite...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.205

    authors: Xi X,Ming L,Liu J

    更新日期:2011-03-01 00:00:00

  • Adulterants in selected dietary supplements and their detection methods.

    abstract::At present, there is a growing trend toward the intentional adulteration of dietary supplements (DS) with synthetic pharmaceuticals, which represents an alarming emerging risk to consumers and a serious problem for regulatory agencies. An amazing array of synthetic drugs and their analogues have been reported as adult...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章,评审

    doi:10.1002/dta.2806

    authors: Muschietti L,Redko F,Ulloa J

    更新日期:2020-07-01 00:00:00

  • Simultaneous ionization and analysis of 84 anabolic androgenic steroids in human urine using liquid chromatography-silver ion coordination ionspray/triple-quadrupole mass spectrometry.

    abstract::Metal ion coordination ionspray (M(+) CIS) ionization is a powerful technique to enhance ionization efficiency and sensitivity. In this study, we developed and validated an analytical method for simultaneous ionization and analysis of 84 anabolic androgenic steroids (65 exogenous and 19 endogenous) using liquid chroma...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.1747

    authors: Kim SH,Cha EJ,Lee KM,Kim HJ,Kwon OS,Lee J

    更新日期:2014-11-01 00:00:00

  • A further insight into the metabolic profile of the nuclear receptor Rev-erb agonist, SR9009.

    abstract::The reactions involved in the metabolic pathways of SR9009 were characterized by liquid chromatography-mass spectrometry (LC-MS) to identify the most appropriate marker(s) of use. The effects of gender, genetic polymorphism, and drug-drug interaction on the metabolic profile of SR9009 were also evaluated. In vitro app...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.2538

    authors: Mazzarino M,Rizzato N,Stacchini C,de la Torre X,Botrè F

    更新日期:2018-11-01 00:00:00

  • Development of a lateral flow dipstick for simultaneous and semi-quantitative analysis of dihydroartemisinin and piperaquine in an artemisinin combination therapy.

    abstract::Dihydroartemisinin (DHA) and piperaquine (PPQ) are two drugs used in an artemisinin-based combination therapy (ACT). The circulation of counterfeit antimalarial drugs demands the development of simple, point-of-care (POC) tests for monitoring drug quality. Here we aimed to design an antibody-based lateral flow dipstic...

    journal_title:Drug testing and analysis

    pub_type: 杂志文章

    doi:10.1002/dta.2656

    authors: Ning X,Tan G,Chen X,Wang M,Wang B,Cui L

    更新日期:2019-09-01 00:00:00