OOIR: Observatory of International Research

Papers

(The TQCC of Drug Testing and Analysis is 5. 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 2022-05-01 to 2026-05-01.)

Article	Citations
Electrophoretic detection of black market myostatin propeptide	105
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Issue Information	49
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Assay validation for vilanterol and its metabolites in human urine with application for doping control analysis	36
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	33
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Origin and Interpretation of Low Methamphetamine Levels Found in Amphetamine‐Positive Urine Samples: Support for Methylation of Amphetamine as a Minor Metabolic Pathway	28
Issue Information	27
Hair EtG Testing in Combination With Measurements of PEth and EtG in Blood to Improve the Assessment of Alcohol Consumption	27
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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
False‐Positive EtG Immunoassay Screening After Exposure to Aliphatic Alcohols. LC‐HRAM‐Orbitrap‐MS Detection of C1–C6 EtG Homologs in Urine, Chest, and Pubic Hair Samples	24
Detection of de‐N‐glycosylated EPO with SDS‐PAGE: A complementary confirmation procedure for recombinant EPO in blood samples	24
Emerging Human Medications in Racing Animals: Analytical and Regulatory Challenges	24
Annual Banned‐Substance Review 17th Edition—Analytical Approaches in Human Sports Drug Testing 2023/2024	24
Dr. Alan Malcolm Duffield	24
Carfentanil structural analogs found in street drugs by paper spray mass spectrometry and their characterization by high‐resolution mass spectrometry	23
Infant exposure to drugs of abuse investigated by hair analysis	22
Biosynthesis and Identification of Clenbuterol Metabolites in Urine and In Vitro Microsome Incubation Samples Using UHPLC‐Q‐Exactive Orbitrap Mass Spectrometry: A Comparison Between Human and Bovine M	21
Cost Minimized Immunoaffinity Purification of EPO and Its Analogs in Doping Control—A Step‐by‐Step Protocol for Human Urine and Blood	21
Simulation of the Metabolism of New Psychoactive Substances Using Electrochemistry‐Mass Spectrometry: Introducing an Innovative Software Tool for Rapid Data Evaluation	21
Identification of Hexahydrocannabiphorol Metabolites in Human Urine	20
Presence of β₂‐agonist growth promoters in human urine samples: GC‐MS/MS evaluation of the excretion profiles of ractopamine administered in microdoses	20
Indirect biomarkers of blood doping: A systematic review	19

In vitro metabolite identification of acetylbenzylfentanyl, benzoylbenzylfentanyl, 3‐fluoro‐methoxyacetylfentanyl, and 3‐phenylpropanoylfentanyl using LC‐QTOF‐HRMS together with synthesized references	19
Issue Information	18
New Transcriptomic Biomarkers for Detection of the Recombinant Human Erythropoietin (rHuEPO) MirCERA in Horses	18
Identification and Investigation of the Intrinsic Receptor Activation Potential and Metabolization of the New Oxo‐Pyridyl Synthetic Cannabinoid Receptor Agonist CH‐FUBBMPDORA	18
The athletic characteristics of Olympic sports to assist anti‐doping strategies	17
Screening of Anabolic Androgenic Steroids in Illicit Dietary Supplements and Counterfeit Drugs Using LC–MS/MS and LC–QTOF/MS	17
Issue Information	17
Absence of new psychoactive substances in wastewater from South Wales, UK, revealed by optimised liquid chromatography‐time‐of‐flight analysis	16
Minor red blood cell antigen phenotyping of athletes sampled in international competitions	16
A direct analysis method using sheath flow probe electrospray ionisation‐mass spectrometry (sfPESI‐MS) to detect drug residues from fingerprint forensic gel lifts	16
Effects of new anti‐doping measures on sports performance in elite female athletes	15
Metabolic Characterization of Vamorolone in Human Liver Microsomes: Implications for Anti‐Doping	15
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
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	15
Characterization of the lysergic acid diethylamide analog, 1‐(thiophene‐2‐carbonyl)‐N,N‐diethyllysergamide (1T‐LSD) from a blotter product	15
Self‐Reported Use of Thyroid Hormones by Athletes at the Olympic Games	15
Detection of extracellular hemoglobin from Arenicola marina in doping control serum samples by means of liquid chromatography and high‐resolution tandem mass spectrometry	15
HS‐FET‐GC/MS‐Method Development and Validation for Analysis of 45 Terpenes—Creating a Complementary Tool for Comprehensive Profiling of Cannabis Flowers in Forensics	14
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Stability of drugs of abuse in synthetic oral fluid investigated using a simple “dilute and inject” method of analysis	14
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Detection of a Single Microdose of Testosterone and Recombinant EPO in Healthy Volunteers	14
Cannabinoid receptor activation potential of the next generation, generic ban evading OXIZID synthetic cannabinoid receptor agonists	14
Myostatin inhibitory peptides in sports drug testing	14
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Administration study of recombinant erythropoietin on the carriers of variant c.577del in EPO gene	13
Issue Information	13
Identification of Tetrahydrocannabidiol Metabolites in Human Urine	13
The 23rd International Conference of Racing Analysts and Veterinarians	13
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Detection of methandienone and its metabolites in equine urine, plasma and hair following a multidose oral administration	13
A fully automated method to quantitate total carbon dioxide in equine plasma by headspace GCMS	13
Mercaptans in malodorants break disulfide bridges in human serum albumin and form adducts suitable as biomarkers of exposure in vitro	13
A simple approach to analysing trace metals in aerosols produced by e‐cigarettes	13
Step‐By‐Step Procedure to Identify Previously Unknown Compounds by LC‐QTOF‐MS Exemplified by an Intoxication With the Methaqualone Analog SL‐164	13
Urine or Oral Fluid for Random Testing? A Review of Real World Data	13
Detection of Transdermal Application of Testosterone to Racehorses by Analysis of Urine and Plasma	13
The detection of ACTH and insulin in equine plasma by solid‐phase extraction and micro‐flow LC/MSMS	13
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
Supra‐physiological doses of anabolic androgenic steroids impact erythropoietin and blood parameters	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
Discrepancies between the stated contents and analytical findings for electronic cigarette liquid products: Identification of the new cannabinoid, Δ⁹‐tetrahydrocannabihexol acetate	12
Phosphonylated tyrosine and lysine residues as biomarkers of local exposure of human hair to the organophosphorus nerve agents sarin and VX	12
Caffeine content of energy drinks marketed in Brazil	12
Identification of thermolabile positional isomers of N‐(2‐hydroxybenzyl)‐2‐(dimethoxyphenyl)ethanamines (NBOH series) using chromatography and mass spectrometry methods	12
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Isomer Composition Assessment of Synthetic Phosphatidylethanol by Collision‐Induced and Ozone‐Induced Dissociation Mass Spectrometry	11
Simple visualization method for the c.577del of erythropoietin variant: CRISPR/dCas9‐based single nucleotide polymorphism diagnosis	11
Influence of Different Washing Hair Procedures in the Quantitative Determination of THC and THCCOOH	11
Doping Control Analysis of Perfluorocarbons in Equine Plasma by Headspace Gas Chromatography‐Tandem Mass Spectrometry	11

Identification of Metabolites of the Dietary Supplement Ingredient 5α‐Hydroxy‐Laxogenin	11
An Indonesian slimming drug with undeclared ingredients causing harm	11
Issue Information	11
Surveillance of Anabolic Agent Residues in US Meat Supply by Liquid Chromatography With High‐Resolution Tandem Mass Spectrometry	11
Chiral separation and quantitation of methylphenidate, ethylphenidate, and ritalinic acid in blood using supercritical fluid chromatography	11
Towards a robust test to detect gene doping for anabolic enhancement in human athletes	10
Issue Information	10
Drug analysis: Comparison between dried plasma spots and liquid plasma samples of trauma patients from Cameroon—A feasibility study	10
Intelligence‐based anti‐doping via an Intelligence and Drug Testing Management (IDTM) system	10
Clenbuterol, but not Inhaled Formoterol, Upregulates the Sarcomere Stabilizer KLHL41 to a Similar Extent as Resistance Training in Human Skeletal Muscle	10
Curiosity and intentions to use myblu e‐cigarettes and an examination of the ‘gateway’ theory: Data from cross‐sectional nationally representative surveys	10
Issue Information	10
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
Detection of thyroid hormones in urine by liquid chromatography coupled to tandem mass spectrometry	10
Rapid detection of 10 benzodiazepines and metabolites in blood and urine using DART‐MS/MS	10
In memoriam	10
EPO and the athlete biological passport: Hematological results from a placebo‐controlled, boosting and microdose EPO administration in male recreational athletes	10
Chemical Analysis and Alkaloid Intake for Kratom Products Available in the United States	10
Geographical classification of opium samples from Myanmar and Afghanistan by NMR profiling and chemometrics	10
Gel Electrophoretic Detection of Black Market ACE‐031	10
Detectability of oxandrolone, metandienone, clostebol and dehydrochloromethyltestosterone in urine after transdermal application	10
In‐depth metabolic study of nonsteroidal selective androgen receptor modulator GSK2881078 in thoroughbred horses and horse liver microsomes for doping control	10
Enhanced analysis of equine plasma for the presence of recombinant human erythropoietin — Implementation of an improved workflow	10
Performance‐enhancing substances in sport: A scientometric review of 75 years of research	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
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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
Examination of the impact of myblu electronic nicotine delivery system e‐liquid nicotine strength on self‐reported measures of dependence	9
Risk of unintentional antidoping rule violations by consumption of hemp products	9
Identification of Metabolites for the Novel 5α‐Reductase Inhibitor Epristeride In Vitro and Its Potential Impact on Doping Testing	9
Trends in exposure to drugs and prohibited substances among sports: A nationwide analysis of 2008–2022 inquiry records	9
Pharmacokinetics of freebase nicotine and nicotine salts following subcutaneous administration in male rats	9
Effect of Reaction Time and Temperature on the Impurity Profile of Amphetamine in the Leuckart Method	9
A Survey of Melatonin in Dietary Supplement Products Sold in the United States	9
Influence of ZnO morphology on the capability of portable paper‐based electrospray ionization mass spectrometry to determine therapeutic drugs in complex matrices	9
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The duration of ketamine detection in hair after treatment cessation: Case study and review of the literature in forensic and clinical casework	9
Metabolism of Six Novel Nitazenes in Human Liver Microsomes Based on Ultra‐High‐Performance Liquid Chromatography Coupled With High‐Resolution Mass Spectrometry	9
Investigation of buprenorphine‐related deaths using urinary metabolite concentrations	8
Characterization of 17 unknown ketamine manufacturing by‐product impurities by UHPLC‐QTOF‐MS	8
Frequency of new psychoactive substances in hair and urine samples of individuals subject to drug testing in driving license regranting—A toxicological perspective	8
Detection of a Distinct Erythropoietin (EPO) Profile After Isoelectric Focusing in Patients With Familial Erythrocytosis	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
Identification of human in vitro metabolites of the haemoglobin S polymerization inhibitor voxelotor for doping control purposes	8
Be aware of (R)‐methamphetamine: Negative immunoassay versus positive confirmation analysis	8
Issue Information	8
Detection of anabolic agents including selective androgen receptor modulators in samples outside of sport	8
Doping Control of Ranitidine in Horses	8
Effectiveness of blood steroidal passport markers for detecting testosterone abuse in Asians	8
Evaluation of Bladder Wash as an Alternative Specimen for Postmortem Toxicology: Comparison to Screening Results of Urine and Kidney Tissue	8
Optimization of Parallel Artificial Liquid Membrane Extraction for the Determination of Over 50 Psychoactive Substances in Oral Fluid Through UHPLC–MS/MS	8
Issue Information	8
Doping Control Analysis of Total Carbon Dioxide (TCO₂) in Equine Plasma by Headspace Gas Chromatography–Mass Spectrometry (HS‐GC/MS)	8
Identification of erythropoietin mimetic peptide 1 linear form in a sealed vial and its administration study in horses for doping control purpose	8
Annual Banned‐Substance Review 18th Edition—Analytical Approaches in Human Sports Drug Testing 2024/2025	8
Metabolism study of 3‐chloromethcathinone (3‐CMC) by dried blood spot (DBS) sampling after controlled administration using a murine model	8
Bioactivation and Metabolism of Amino Acid MDMA Prodrugs in Zebrafish Embryos, Human Liver S9, Whole Blood, and Microdosed Human Urine	8
A Novel Workflow for Fast Elucidation of Drug Metabolites for Screening—Combining In Silico Metabolite Prediction With Trapped Ion Mobility QTOF‐MS	8
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Supercritical fluid chromatography	8
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Acute atrazine intoxication in heifers: Case report and toxicological studies	7
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Pitfalls in assessing the exogenous origin of GHB in hair	7
Estimating human pharmacokinetic parameters for electronic nicotine delivery system products from chemical analyses of their aerosols	7
Rapid screening of 2‐benzylbenzimidazole nitazene analogs in suspect counterfeit tablets using Raman, SERS, DART‐TD‐MS, and FT‐IR	7
Issue Information	7
Gene Editing and the Future of Thoroughbred Breeding and Racing	7
Response to Letter to Editor From Brown et al.	7
Statistical Discrimination of Urinary Steroid Biomarkers in the Athlete Biological Passport: A Novel Approach to an Abnormal Steroid Profile Score (ASPS)	7
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Analytical toxicology of yew constituents in human blood and urine by liquid chromatography‐high‐resolution tandem mass spectrometry	7
Comparison of Microcapillary Blood Sampling Devices for Use in Anti‐Doping	7
Fentanyl and Propofol Misuse: Hair Analysis Provides Significant Evidence in the Death of a Young Doctor	7
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Drug‐impaired driving and traffic collisions: Study on a cross section of the Italian population	7
A strategy for the detection of benzodiazepine drugs using low‐resolution paper‐spray mass spectrometry for harm reduction drug checking	7
Analytical and behavioral characterization of 1‐hexanoyl‐LSD (1H‐LSD)	7
Metabolite markers for three synthetic tryptamines N‐ethyl‐N‐propyltryptamine, 4‐hydroxy‐N‐ethyl‐N‐propyltryptamine, and 5‐methoxy‐N‐ethyl‐N‐propyltryptamine	7

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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	7
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Rapid desorption and analysis for illicit drugs and chemical profiling of fingerprints by SICRIT ion source	7
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Analysis of dried blood spots is a feasible alternative for detecting ephedrine in doping control	7
Ambient ionisation mass spectrometry for drug and toxin analysis: A review of the recent literature	7
Detection of Oral Testosterone Undecanoate Administration in UGT2B17 del/del and del/ins Individuals. Part II: Urinary Endogenous Steroid Sulfate Markers	7
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Mapping of the Pharmacological Effect of Prohibited Substances and Methods to Athletic Physiological Characteristics	6
Impact of Repeated Glucocorticoid Oral Administration on the Urinary Steroid Profile	6
Analytical advances in horseracing medication and doping control from 2018 to 2023	6
Quantitative analysis of tetrahydrocannabinol isomers and other toxicologically relevant drugs in blood	6
Issue Information	6
Determination of amphetamine enantiomers in urine by conductive vial electromembrane extraction and ultra‐high performance supercritical fluid chromatography tandem mass spectrometry	6
Log D_7.4 and plasma protein binding of synthetic cannabinoid receptor agonists and a comparison of experimental and predicted lipophilicity	6
Evaluation of alternative gas chromatographic and mass spectrometric behaviour of trimethylsilyl‐derivatives of non‐hydrolysed sulfated anabolic steroids	6
Detection and Longitudinal Monitoring of Cyclosporine in Horse Plasma and Urine After Ocular Implant Administration	6
Automated enzymatic hydrolysis of urine samples for improved systematic toxicological analysis of drug‐facilitated sexual assault cases	6
Identification of three unexpected new psychoactive substances at an Australian drug checking service	6
Issue Information	6
Behavioral intentions assessment of a disposable e‐cigarette among adult current, former, and non‐smokers in the United States	6
Driving license regranting: Hair EtG, serum CDT, and the role of sociodemographic and medicolegal variables	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
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
External hair contamination from cannabis and “light cannabis” delivered by smoking and vaping: An in vitro study	6
Comparison of analytical approaches for the detection of oral testosterone undecanoate administration in men	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
Determination of urinary deanol‐N‐oxide excretion profiles after ingestion of nutritional supplements containing deanol	6
Rapid and Accurate Identification of Fentanyl and Buprenorphine in Transdermal Patches Using QuickProbe GC–MS	6
Prevalence of AAS‐Positive Samples at Drug Abuse Laboratory Sweden Between 2014 and 2023 and Sub‐Study of Dual Use of AAS and Narcotics	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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Anti‐Doping Testing at FIFA World Cup 2022	6
Examining Phosphatidylethanol (PEth) Formation Rates Within and Between Subjects in Ex Vivo Whole Blood	6
Hematological ABP: Interest of New Generation Sequencing Methods (NGS) to Study Suspicious Fluctuations in Erythropoiesis	6
Changing trends in novel benzodiazepine use within Scottish prisons: detection, quantitation, prevalence, and modes of use	6
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Issue Information	6
Chemical Straightening as a Source of Analytical Variability in Hair Testing: A Dual‐Analyte Case Report	6
Retrospective Evaluation of Novel Synthetic Opioids and Xylazine Chronic Intake by Post‐Mortem Hair Testing	5
Analysis of Testosterone Esters in Serum and DBS Samples—Results From an Interlaboratory Study	5
Characterization of Samples From a Seized Synthetic Drug Laboratory by Suspect and Nontarget Screening With LC‐HRMS—Identification of Markers Indicating Changes in the Clandestine Manufacturing Proces	5
Urinary and Plasma Profiles of Betamethasone and Triamcinolone Acetonide Following Intra‐Articular and Related Administrations	5
Application to several suspected poisoning cases of a validated analytical method for the determination of muscarine in human biological matrices using liquid chromatography with high‐resolution mass	5
LC‐IRMS: Towards a High‐Throughput IRMS Methodology?	5
“Do It Yourself” Synthetic Cannabinoid Receptor Agonist Precursors as a Ban‐Evading Strategy: Comparison of the Pharmacological Characteristics of Precursors and Their Final Products	5
Estimation of anti‐diabetes drug metformin in Turkiye using wastewater‐based epidemiology	5
The importance of harmful and potentially harmful constituents in the implementation of the 2009 US Family Smoking Prevention and Tobacco Control Act	5
The Society of Hair Testing consensus on general recommendations for hair testing and drugs of abuse testing in hair	5
Key challenges for in vitro testing of tobacco products for regulatory applications: Recommendations for dosimetry	5
Ecdysterone: Possible sources of origin in urine	5
In vitro metabolism study of ADB‐P‐5Br‐INACA and ADB‐4en‐P‐5Br‐INACA using human hepatocytes, liver microsomes, and in‐house synthesized references	5
Issue Information	5
Comment on the upper cutoff level for the alcohol biomarker phosphatidylethanol (PEth) for the assessment of alcohol consumption in forensic practice	5
Evaluation of spectroscopic techniques for on‐site drug testing of festival seizures	5
Issue Information	5
Do dried blood spots have the potential to support result management processes in routine sports drug testing?—Part 3: LC–MS/MS‐based peptide analysis for dried blood spot sampling time point estimati	5
Development of an Optimized Extraction Method to Recover Drug Material From Used Test Strips for Comprehensive Drug Checking	5
mRNA Biomarkers in Dried Blood Spots May Improve Detection of Autologous Blood Micro‐Transfusions Using an Individualized Approach	5
Consensus for the use of the alcohol biomarker phosphatidylethanol (PEth) for the assessment of abstinence and alcohol consumption in clinical and forensic practice (2022 Consensus of Basel)	5
Yearly intrasubject variability of hematological biomarkers in elite athletes for the Athlete Biological Passport	5
Rapid Analytical Method for Quantification of Gamma‐Hydroxybutyrate (GHB) in Hair by UPLC‐MS/MS	5
Determination of higenamine in common natural spices by ultrahigh‐performance liquid chromatography–tandem mass spectrometry	5
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Metabolism of highly potent synthetic opioid nitazene analogs: N‐ethyl‐N‐(1‐glucuronyloxyethyl) metabolite formation and degradation to N‐desethyl metabolites during enzymatic hyd	5
Determination of Hormonal Growth Promotants in Beef Using Liquid Chromatography–Tandem Mass Spectrometry	5
Transcriptomic Biomarkers in Blood Indicative of the Administration of Recombinant Human Erythropoietin to Thoroughbred Horses	5
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SFC‐MS/MS for orthogonal separation of hydroxylated 17α‐methyltestosterone isomers	5
Confidence in nicotine for tobacco harm reduction—Bridging the policy–practice gap	5
Quantitative determination of R/S‐methadone in human serum using ultra‐high performance supercritical fluid chromatography‐tandem mass spectrometry: A method for routine use	5
Methylation of phase II metabolites of endogenous anabolic androgenic steroids to improve analytical performance	5
Prolonged Detection of GHB Intake in Urine: Are We Finally There?	5
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Detection in seized samples, analytical characterization, and in vitro metabolism of the newly emerged 5‐bromo‐indazole‐3‐carboxamide synthetic cannabinoid receptor agonists	5
Carbon Isotope Ratio Analysis of Urinary Steroids Following Extensive Cleanup and Formylation	5
Acute psychotropic, autonomic, and endocrine effects of 5,6‐methylenedioxy‐2‐aminoindane (MDAI) compared with 3,4‐methylenedioxymethamphetamine (MDMA) in human volunteers: A self‐administration study	5
Biology and Management of Male‐Bodied Athletes in Elite Female Sports	5
Issue Information	5
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Issue Information	5
Detection of activin receptor type IIA and IIB‐Fc fusion proteins by automated capillary immunoassay	5
PEth Cut‐Off Thresholds for Hazardous Alcohol Consumption Based on a Drinking Study	5
Endogenous Nature of Hydrocortisone Acetate in Horse	5
Optimization and implementation of four duplex quantitative polymerase chain reaction assays for gene doping control in horseracing	5
Ketoprofen in horses: Metabolism, pharmacokinetics, and effects on inflammatory biomarkers	5
Screening and Quantification of the Synthetic Cannabinoid Receptor Agonist 5F‐MDMB‐PINACA From Seized Prison Paper Using Ultraperformance Liquid Chromatography–Mass Spectrometry Approaches	5