A Comparison of Three Analytical Procedures for Oxandrolone Long-Term Metabolite Determination in Urine Samples [0.03%]
B Stojanovic,S Pfeffer,G Gmeiner
B Stojanovic
In contemporary antidoping analysis, doping control laboratories are confronted with a wide range of evolving analytical challenges. Continuous methodological refinement is required in this dynamic field, particularly with respect to analyt...
Recreational Drug Use at a Music Festival: A Dual Approach Using Hair Biomarkers Analysis and Participant Self-Reported Drug Use [0.03%]
A Y Simão,T Rosado,M Barroso et al.
A Y Simão et al.
The growing prevalence of substance use and its associated health consequences highlights the need for reliable approaches to assess consumption patterns and validate self-reported data. This study, conducted at an international music festi...
A Novel Workflow for Fast Elucidation of Drug Metabolites for Screening-Combining In Silico Metabolite Prediction With Trapped Ion Mobility QTOF-MS [0.03%]
Annette Zschiesche,Birgit Schneider,Ilona Nordhorn et al.
Annette Zschiesche et al.
Urine is one of the preferred matrices for standard toxicological analysis, which makes the inclusion of drug metabolites in targeted and untargeted screening mandatory. Mass spectrometry is key for substance identification, but updating me...
Examining Phosphatidylethanol (PEth) Formation Rates Within and Between Subjects in Ex Vivo Whole Blood [0.03%]
Haidyn G Stark,Jesus J Sanchez,Nathalie Hill-Kapturczak et al.
Haidyn G Stark et al.
Interpretation of phosphatidylethanol (PEth) is complicated by between-subject variation in the PEth concentrations after matched ethanol exposure. Previous research suggests differences in PEth formation rates may explain this variability ...
Detection of the GH Analogue Redalsomatropin Alfa in Sports Drug Testing: Immunological Approaches and LC-HRMS/MS [0.03%]
Katja Walpurgis,Andreas Thomas,Jasmin Thelen et al.
Katja Walpurgis et al.
Human growth hormone (hGH) is a peptide hormone exerting different growth-promoting and metabolic functions through binding to the GH receptor (GHR). Due to the presumed lipolytic and anabolic effects, the misuse of recombinant 22-kDa hGH i...
Identification and Characterization of the Designer Opioid N-Pyrrolidino Fluetonitazene in Nasal Spray [0.03%]
鼻喷剂中新型合成阿片类物质N-吡咯烷氟托尼达嗪的鉴别与定性分析
Fabian Picht,Valentin Cepus,Rona Hohlfeld et al.
Fabian Picht et al.
Detection of drugs in non-biological samples serves as a fundamental basis for identifying emerging trends in the field of new psychoactive substances and provides valuable information for optimizing analytical methods within the field of c...
Challenges in the Interpretation of Isolated THC-COOH Detection in Hair: Forensic and Clinical Implications [0.03%]
孤立检测到THC-COOH在头发中的解读面临的挑战：法医和临床意义
Maria Del Mar Ramirez Fernandez,Vincent Cirimele,Evi Ruyssinckx et al.
Maria Del Mar Ramirez Fernandez et al.
Cannabis detection in hair typically relies on Δ9-tetrahydrocannabinol (THC), but interpretation is limited by its lipophilicity, external contamination, and washout. The metabolite 11-nor-9-carboxy-THC (THC-COOH) is considered a more spec...
Influence of Different Washing Hair Procedures in the Quantitative Determination of THC and THCCOOH [0.03%]
不同的洗脱头发方法对定量测定THC和THCCOOH的影响研究
Valentina Martini,Alessandro Raffagli,Cristiana Stramesi et al.
Valentina Martini et al.
Environmental exposure can affect hair analysis, making decontamination a critical preanalytical step. No standardized washing protocol exists, and laboratories use different solvent combinations. This study evaluated the impact of three co...
Chemical Straightening as a Source of Analytical Variability in Hair Testing: A Dual-Analyte Case Report [0.03%]
化学拉直对毛发检测的分析结果影响的评价：一起同时涉及两种精神活性物质的研究案例报告
Miriam Blanco-Ces,Ana de-Castro-Ríos,María Cobo-Golpe et al.
Miriam Blanco-Ces et al.
Hair analysis is increasingly used in forensic toxicology; however, result interpretation may be influenced by cosmetic hair treatments. Although the effects of bleaching, dyeing, and thermal straightening have already been evaluated, data ...
Case Reports
Drug testing and analysis. 2026 Apr 8. DOI:10.1002/dta.70071 2026
Screening of Anabolic Androgenic Steroids in Illicit Dietary Supplements and Counterfeit Drugs Using LC-MS/MS and LC-QTOF/MS [0.03%]
使用LC-MS/MS和LC-QTOF/MS筛查非法保健品及假冒药物中的蛋白同化制剂
Hyunsuk Kim,Sowoon Seo,Aeseul Kim et al.
Hyunsuk Kim et al.
The manufacture and distribution of illicit drugs in the Republic of Korea are an increasing problem. We aimed to develop a rapid and reliable simultaneous analytical method for monitoring the illegal presence of anabolic androgenic steroid...