OOIR: Observatory of International Research

Papers

(The TQCC of Drug Testing and Analysis is 6. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-08-01 to 2025-08-01.)

Article	Citations
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Issue Information	58
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Infant exposure to drugs of abuse investigated by hair analysis	40
Issue Information	40
Cover Picture	38
Dr. Alan Malcolm Duffield	36
Electrophoretic detection of black market myostatin propeptide	33
Presence of β₂‐agonist growth promoters in human urine samples: GC‐MS/MS evaluation of the excretion profiles of ractopamine administered in microdoses	32
Assay validation for vilanterol and its metabolites in human urine with application for doping control analysis	30
In vitro metabolite identification of acetylbenzylfentanyl, benzoylbenzylfentanyl, 3‐fluoro‐methoxyacetylfentanyl, and 3‐phenylpropanoylfentanyl using LC‐QTOF‐HRMS together with synthesized references	28
Does a hair test allow discriminating a tail end of a doping regimen from a contamination in case of challenging an anti‐doping rule violation? II. Case report involving chlortalidone	25
Advances in the detection of growth hormone releasing hormone synthetic analogs	25
Long‐term monitoring of IOX4 in horse hair and its longitudinal distribution with segmental analysis using liquid chromatography/electrospray ionization Q Exactive high‐resolution mass spectrometry fo	25
UHPLC–MS/MS method for the quantification of ultra‐traces of irinotecan and its metabolites in red blood cells and plasma to detect caregivers' contamination	25
Detection of de‐N‐glycosylated EPO with SDS‐PAGE: A complementary confirmation procedure for recombinant EPO in blood samples	23
Advances in cocaine signature methodology: Alkaloid and isotope profiles of coca grown in Puno, Peru	23
Identification of Hexahydrocannabiphorol Metabolites in Human Urine	22
Carfentanil structural analogs found in street drugs by paper spray mass spectrometry and their characterization by high‐resolution mass spectrometry	22
Hair EtG Testing in Combination With Measurements of PEth and EtG in Blood to Improve the Assessment of Alcohol Consumption	22
Evaluation of RapidSTAT®, DrugWipe® 6S, DrugScreen® 5TK and DrugScreen® 7TR for on‐site drug testing in German police roadside traffic patrol	22
Cost Minimized Immunoaffinity Purification of EPO and Its Analogs in Doping Control—A Step‐by‐Step Protocol for Human Urine and Blood	22
Annual Banned‐Substance Review 17th Edition—Analytical Approaches in Human Sports Drug Testing 2023/2024	21
Structure elucidation of the novel synthetic cannabinoid Cumyl‐Tosyl‐Indazole‐3‐Carboxamide (Cumyl‐TsINACA) found in illicit products in Germany	19

Absence of new psychoactive substances in wastewater from South Wales, UK, revealed by optimised liquid chromatography‐time‐of‐flight analysis	19
Self‐Reported Use of Thyroid Hormones by Athletes at the Olympic Games	19
Emerging Human Medications in Racing Animals: Analytical and Regulatory Challenges	19
Characterization of the lysergic acid diethylamide analog, 1‐(thiophene‐2‐carbonyl)‐N,N‐diethyllysergamide (1T‐LSD) from a blotter product	19
Effects of new anti‐doping measures on sports performance in elite female athletes	18
Detection of extracellular hemoglobin from Arenicola marina in doping control serum samples by means of liquid chromatography and high‐resolution tandem mass spectrometry	18
Stability of drugs of abuse in synthetic oral fluid investigated using a simple “dilute and inject” method of analysis	18
The athletic characteristics of Olympic sports to assist anti‐doping strategies	17
Minor red blood cell antigen phenotyping of athletes sampled in international competitions	17
A direct analysis method using sheath flow probe electrospray ionisation‐mass spectrometry (sfPESI‐MS) to detect drug residues from fingerprint forensic gel lifts	17
Indirect biomarkers of blood doping: A systematic review	16
Detection of a Single Microdose of Testosterone and Recombinant EPO in Healthy Volunteers	16
Identification and Investigation of the Intrinsic Receptor Activation Potential and Metabolization of the New Oxo‐Pyridyl Synthetic Cannabinoid Receptor Agonist CH‐FUBBMPDORA	16
Annual banned‐substance review: Analytical approaches in human sports drug testing 2020/2021	16
Metabolic Characterization of Vamorolone in Human Liver Microsomes: Implications for Anti‐Doping	16
Interest of Hair Tests to Discriminate a Tail End of a Voluntary Doping Regimen From the Use of a Contaminated Medicine in Case of Challenging an Antidoping Rule Violation. VI. Case Example With Trime	15
Measurements of hydrocortisone and cortisone for longitudinal profiling of equine plasma by liquid chromatography–tandem mass spectrometry	15
Cannabinoid receptor activation potential of the next generation, generic ban evading OXIZID synthetic cannabinoid receptor agonists	15
New Transcriptomic Biomarkers for Detection of the Recombinant Human Erythropoietin (rHuEPO) MirCERA in Horses	15
The detection of ACTH and insulin in equine plasma by solid‐phase extraction and micro‐flow LC/MSMS	14
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Phosphonylated tyrosine and lysine residues as biomarkers of local exposure of human hair to the organophosphorus nerve agents sarin and VX	14
Detection of methandienone and its metabolites in equine urine, plasma and hair following a multidose oral administration	14
Quantitative analysis of nonsteroidal anti‐inflammatory drugs in dried blood spot from mountain ultra‐trail runners. Contribution of pharmacokinetic models for the interpretation of the results	14
Supra‐physiological doses of anabolic androgenic steroids impact erythropoietin and blood parameters	14
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Caffeine content of energy drinks marketed in Brazil	13
Quantitative determination and metabolic profiling of synthetic cathinone eutylone in vitro and in urine samples by liquid chromatography tandem quadrupole time‐of‐flight mass spectrometry	13
In vitro and in vivo metabolism of the anabolic‐androgenic steroid oxandrolone in the horse	13
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A fully automated method to quantitate total carbon dioxide in equine plasma by headspace GCMS	13
The 23rd International Conference of Racing Analysts and Veterinarians	13
Myostatin inhibitory peptides in sports drug testing	13
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Cannabinoid‐based vaping products and supplement formulations reported by consumers to precipitate adverse effects	12
Toward a Cannabis Terroir: Untargeted Metabolomic Profiling of Authentic Samples Using Gas Chromatography–High‐Resolution Mass Spectrometry (GC‐HRMS) and Liquid Chromatography–High‐Resolution Tandem M	12
Identification of thermolabile positional isomers of N‐(2‐hydroxybenzyl)‐2‐(dimethoxyphenyl)ethanamines (NBOH series) using chromatography and mass spectrometry methods	12
Detection of Transdermal Application of Testosterone to Racehorses by Analysis of Urine and Plasma	12
Issue Information	12
Chiral separation and quantitation of methylphenidate, ethylphenidate, and ritalinic acid in blood using supercritical fluid chromatography	12
Discrepancies between the stated contents and analytical findings for electronic cigarette liquid products: Identification of the new cannabinoid, Δ⁹‐tetrahydrocannabihexol acetate	12
Administration study of recombinant erythropoietin on the carriers of variant c.577del in EPO gene	12
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Detection of bazedoxifene, a selective estrogen receptor modulator, in human urine by liquid chromatography‐tandem mass spectrometry	12
A simple approach to analysing trace metals in aerosols produced by e‐cigarettes	12
New gamma‐hydroxybutyric acid (GHB) biomarkers: Development and validation of a liquid chromatography–tandem mass spectrometry method for the determination of GHB amino acid, carnitine, and fatty acid	12
Step‐By‐Step Procedure to Identify Previously Unknown Compounds by LC‐QTOF‐MS Exemplified by an Intoxication With the Methaqualone Analog SL‐164	11
Intelligence benefit of the 3‐methoxytyramine to tyramine ratio in equine urine	11
An Indonesian slimming drug with undeclared ingredients causing harm	11
Issue Information	11

Mercaptans in malodorants break disulfide bridges in human serum albumin and form adducts suitable as biomarkers of exposure in vitro	11
Issue Information	11
Detectability of oxandrolone, metandienone, clostebol and dehydrochloromethyltestosterone in urine after transdermal application	11
Human abuse liability assessment of e‐cigarettes: Why, what and how?	11
Simultaneous quantification of 19 nonsteroidal anti‐inflammatory drugs in oral fluid by liquid chromatography‐high resolution mass spectrometry: Application on ultratrail runner's oral fluid	11
Rapid detection of 10 benzodiazepines and metabolites in blood and urine using DART‐MS/MS	11
Detection of undeclared doping substances in nutritional supplements in the context of follow‐up investigations concerning adverse analytical findings	10
Gel Electrophoretic Detection of Black Market ACE‐031	10
A single LC‐MS/MS validated method for tulathromycin quantification in plasma, seminal plasma, and urine to be applied in a pharmacokinetic study in bull	10
Towards a robust test to detect gene doping for anabolic enhancement in human athletes	10
Assessing EPO stability in urine and comparing recombinant EPO detectability in matched urine, venous serum, and capillary serum following a controlled epoetin alfa administration	10
Surveillance of Anabolic Agent Residues in US Meat Supply by Liquid Chromatography With High‐Resolution Tandem Mass Spectrometry	10
Simple visualization method for the c.577del of erythropoietin variant: CRISPR/dCas9‐based single nucleotide polymorphism diagnosis	10
Three cases of naloxone interference with an oxycodone immunoassay in oral fluid	10
Drug analysis: Comparison between dried plasma spots and liquid plasma samples of trauma patients from Cameroon—A feasibility study	10
In‐depth metabolic study of nonsteroidal selective androgen receptor modulator GSK2881078 in thoroughbred horses and horse liver microsomes for doping control	10
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Doping control analysis of myo‐inositol trispyrophosphate and 10 bisphosphonates in equine plasma by ion chromatography–mass spectrometry and its application to clodronic acid horse administrat	10
Equine metabolism of the growth hormone secretagogue MK‐0677 in vitro and in urine and plasma following oral administration	10
Implementation of a marker substance for monitoring in situ 17‐keto modifications in endogenous steroids caused by microbiological contamination	10
Influence of ZnO morphology on the capability of portable paper‐based electrospray ionization mass spectrometry to determine therapeutic drugs in complex matrices	9
Metabolism of third generation synthetic cannabinoids using zebrafish larvae	9
Curiosity and intentions to use myblu e‐cigarettes and an examination of the ‘gateway’ theory: Data from cross‐sectional nationally representative surveys	9
Direct sequence confirmation of qPCR products for gene doping assay validation in horses	9
EPO and the athlete biological passport: Hematological results from a placebo‐controlled, boosting and microdose EPO administration in male recreational athletes	9
Removal of the influence of plasma volume fluctuations for the athlete biological passport and stability of haematological variables in active women taking oral contraception	9
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Metabolism of Six Novel Nitazenes in Human Liver Microsomes Based on Ultra‐High‐Performance Liquid Chromatography Coupled With High‐Resolution Mass Spectrometry	9
Doping Control Analysis of Perfluorocarbons in Equine Plasma by Headspace Gas Chromatography‐Tandem Mass Spectrometry	9
Chemical Analysis and Alkaloid Intake for Kratom Products Available in the United States	9
Issue Information	9
Interest of nail clipping tests to discriminate a tail end of a doping regimen from a contamination in case of challenging an adverse analytical finding: Case reports involving ostarine	9
Enhanced analysis of equine plasma for the presence of recombinant human erythropoietin — Implementation of an improved workflow	9
Risk of unintentional antidoping rule violations by consumption of hemp products	9
Examination of the impact of myblu electronic nicotine delivery system e‐liquid nicotine strength on self‐reported measures of dependence	9
Trends in exposure to drugs and prohibited substances among sports: A nationwide analysis of 2008–2022 inquiry records	9
A Survey of Melatonin in Dietary Supplement Products Sold in the United States	9
Geographical classification of opium samples from Myanmar and Afghanistan by NMR profiling and chemometrics	9
Detection of thyroid hormones in urine by liquid chromatography coupled to tandem mass spectrometry	9
Performance‐enhancing substances in sport: A scientometric review of 75 years of research	9
Carbon and nitrogen isotopic analysis of morphine from opium and heroin samples originating in the four major heroin producing regions	9
Pharmacokinetics of freebase nicotine and nicotine salts following subcutaneous administration in male rats	9
The duration of ketamine detection in hair after treatment cessation: Case study and review of the literature in forensic and clinical casework	9
Intelligence‐based anti‐doping via an Intelligence and Drug Testing Management (IDTM) system	9
In memoriam	9
Cover Picture	9
Issue Information	9
Frequency of new psychoactive substances in hair and urine samples of individuals subject to drug testing in driving license regranting—A toxicological perspective	8
Supercritical fluid chromatography	8
Detection of Δ⁹‐tetrahydrocannabinol (THC) in oral fluid using two point‐of‐collection testing devices following oral administration of a THC and cannabidiol containing oil	8
Evaluation of Bladder Wash as an Alternative Specimen for Postmortem Toxicology: Comparison to Screening Results of Urine and Kidney Tissue	8
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Metabolism study of 3‐chloromethcathinone (3‐CMC) by dried blood spot (DBS) sampling after controlled administration using a murine model	8
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Investigation of buprenorphine‐related deaths using urinary metabolite concentrations	8
Identification of human in vitro metabolites of the haemoglobin S polymerization inhibitor voxelotor for doping control purposes	8
An unusual detection of 2‐amino‐3‐(2‐chlorobenzoyl)‐5‐ethylthiophene and 2‐methylamino‐5‐chlorobenzophenone in illicit yellow etizolam tablets marked “5617” seized in the Republic of Ireland	8
Doping Control Analysis of Total Carbon Dioxide (TCO₂) in Equine Plasma by Headspace Gas Chromatography–Mass Spectrometry (HS‐GC/MS)	8
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Doping Control of Ranitidine in Horses	8
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Issue Information	8
Identification of erythropoietin mimetic peptide 1 linear form in a sealed vial and its administration study in horses for doping control purpose	8
Be aware of (R)‐methamphetamine: Negative immunoassay versus positive confirmation analysis	8
Detection of anabolic agents including selective androgen receptor modulators in samples outside of sport	8
Optimization of Parallel Artificial Liquid Membrane Extraction for the Determination of Over 50 Psychoactive Substances in Oral Fluid Through UHPLC–MS/MS	8
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An LC‐MS/MS method for the determination of drugs of abuse included THC‐COOH, EtG, and NPS, using a single hair extraction sample	8
Effectiveness of blood steroidal passport markers for detecting testosterone abuse in Asians	8
Metabolite markers for three synthetic tryptamines N‐ethyl‐N‐propyltryptamine, 4‐hydroxy‐N‐ethyl‐N‐propyltryptamine, and 5‐methoxy‐N‐ethyl‐N‐propyltryptamine	8
Issue Information	8
Characterization of 17 unknown ketamine manufacturing by‐product impurities by UHPLC‐QTOF‐MS	8
Toxic plants—Detection of colchicine in a fast systematic clinical toxicology screening using liquid chromatography–mass spectrometry	7
Acute atrazine intoxication in heifers: Case report and toxicological studies	7
Rapid screening of 2‐benzylbenzimidazole nitazene analogs in suspect counterfeit tablets using Raman, SERS, DART‐TD‐MS, and FT‐IR	7
Analytical toxicology of yew constituents in human blood and urine by liquid chromatography‐high‐resolution tandem mass spectrometry	7
Detection of Oral Testosterone Undecanoate Administration in UGT2B17 del/del and del/ins Individuals. Part II: Urinary Endogenous Steroid Sulfate Markers	7

Comparison of Microcapillary Blood Sampling Devices for Use in Anti‐Doping	7
Rapid desorption and analysis for illicit drugs and chemical profiling of fingerprints by SICRIT ion source	7
Automated enzymatic hydrolysis of urine samples for improved systematic toxicological analysis of drug‐facilitated sexual assault cases	7
Identification of three unexpected new psychoactive substances at an Australian drug checking service	7
Ambient ionisation mass spectrometry for drug and toxin analysis: A review of the recent literature	7
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Estimating human pharmacokinetic parameters for electronic nicotine delivery system products from chemical analyses of their aerosols	7
Analytical developments of p‐hydroxy prenylamine reference material for dope control research: Characterization and purity assessment	7
Pitfalls in assessing the exogenous origin of GHB in hair	7
Issue Information	7
Determination of urinary deanol‐N‐oxide excretion profiles after ingestion of nutritional supplements containing deanol	7
Behavioral intentions assessment of a disposable e‐cigarette among adult current, former, and non‐smokers in the United States	7
A strategy for the detection of benzodiazepine drugs using low‐resolution paper‐spray mass spectrometry for harm reduction drug checking	7
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Fentanyl and Propofol Misuse: Hair Analysis Provides Significant Evidence in the Death of a Young Doctor	7
Emergence of the less common cannabinoid Δ⁸‐Tetrahydrocannabinol in a doping sample	7
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Analysis of dried blood spots is a feasible alternative for detecting ephedrine in doping control	7
Analytical and behavioral characterization of 1‐hexanoyl‐LSD (1H‐LSD)	7
In vitro metabolic studies of novel selective androgen receptor modulators and their use for doping control analysis	7
Biomarker ratios	7
Analytical advances in horseracing medication and doping control from 2018 to 2023	7
Drug‐impaired driving and traffic collisions: Study on a cross section of the Italian population	7
Return of the lysergamides. Part VII: Analytical and behavioural characterization of 1‐valeroyl‐d‐lysergic acid diethylamide (1V‐LSD)	7
Analysis of potential phenylacetone precursors (ethyl 3‐oxo‐2‐phenylbutyrate, methyl 3‐oxo‐4‐phenylbutyrate, and ethyl 3‐oxo‐4‐phenylbutyrate) by gas chromatography/mass spectrometry and their convers	7
Issue Information	6
Hematological ABP: Interest of New Generation Sequencing Methods (NGS) to Study Suspicious Fluctuations in Erythropoiesis	6
Evaluation of alternative gas chromatographic and mass spectrometric behaviour of trimethylsilyl‐derivatives of non‐hydrolysed sulfated anabolic steroids	6
Introduction of a PEGylated EPO conjugate as internal standard for EPO analysis in doping controls	6
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Impact of Repeated Glucocorticoid Oral Administration on the Urinary Steroid Profile	6
The 41^st Manfred Donike workshop on doping analysis	6
Bayesian Individual Limits for IGF‐1 Monitoring in Equine Plasma: Implementation in the Equine Biological Passport	6
Identification of equine in vitro metabolites of seven non‐steroidal selective androgen receptor modulators for doping control purposes	6
The importance of harmful and potentially harmful constituents in the implementation of the 2009 US Family Smoking Prevention and Tobacco Control Act	6
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Tentative identification of in vitro metabolites of O‐acetylpsilocin (psilacetin, 4‐AcO‐DMT) by UHPLC‐Q‐Orbitrap MS	6
External hair contamination from cannabis and “light cannabis” delivered by smoking and vaping: An in vitro study	6
Driving license regranting: Hair EtG, serum CDT, and the role of sociodemographic and medicolegal variables	6
A Generic Detection Method for the Doping Control Analysis of Fc‐Fusion Proteins and Monoclonal Antibodies in Equine Plasma	6
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Comparison of analytical approaches for the detection of oral testosterone undecanoate administration in men	6
Development and validation of general plasma screening method for performance enhancing drugs in racehorses utilizing liquid chromatography–high‐resolution mass spectrometry (LC–HRMS)	6
Impurity profiling of methamphetamine synthesized from methyl α‐acetylphenylacetate	6
Sequence determination of phosphorothioated oligonucleotides using MALDI‐TOF mass spectrometry for controlling gene doping in equestrian sports	6
Procollagen type III amino‐terminal propeptide and insulin‐like growth factor I as biomarkers of growth hormone administration	6
Changing trends in novel benzodiazepine use within Scottish prisons: detection, quantitation, prevalence, and modes of use	6
Anti‐Doping Testing at FIFA World Cup 2022	6
Quantitative analysis of tetrahydrocannabinol isomers and other toxicologically relevant drugs in blood	6
Determination of amphetamine enantiomers in urine by conductive vial electromembrane extraction and ultra‐high performance supercritical fluid chromatography tandem mass spectrometry	6
Rapid and Accurate Identification of Fentanyl and Buprenorphine in Transdermal Patches Using QuickProbe GC–MS	6
Impurity profiling of methamphetamine synthesised from α‐phenylacetoacetonitrile (APAAN)	6
Demonstration of an End‐To‐End Workflow Using Atmospheric Solids Analysis Probe–Mass Spectrometry (ASAP‐MS) With Real‐Time Sample Recognition Software for the Identification of Falsified and Substanda	6
Structure identification and analysis of the suspected chemical precursor of 2‐fluorodeschloroketamine and its decomposition products	6
Detection of activin receptor type IIA and IIB‐Fc fusion proteins by automated capillary immunoassay	6
Issue Information	6