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Determination of Hormonal Growth Promotants in Beef Using Liquid Chromatography–Tandem Mass Spectrometry

An LC–MS/MS method was developed and validated to detect 12 synthetic or endogenous hormonal growth promotants commonly utilized in the…

Detecting EPO in Microvolumetric Capillary Serum Shipped at Ambient Temperature for Antidoping Testing

Microvolumetric capillary serum samples were tested for erythropoietin receptor agonists (ERAs) after storage and shipping at varying times and temperatures…

Investigation Into the Equine Metabolism of Phosphodiesterase‐4 Inhibitor Roflumilast for Potential Doping Control

This paper describes the metabolic transformation of the phosphodiesterase-4 inhibitor Roflumilast in thoroughbred horses after oral intake. Additionally, it presents…

UHPLC‐QTOFMS Urine Drug Screening With Dilute‐and‐Shoot Sample Preparation and Vacuum‐Insulated Probe‐Heated Electrospray Ionization

The new ionization technique, vacuum-insulated probe-heated electrospray, allows for a simple dilute-and-shoot sample preparation to be used with liquid chromatography…

β‐Hydroxy β‐Methyl Butyric Acid (HMB) and Its Potential Doping Relevance: A Pilot Study on Its Urinary Excretion Profile

β-hydroxy β-methyl butyric acid (HMB), either as the free acid or in the form of its calcium salt, is a…

The MAIIA EPO Purification Gel Kit, 7D3—An Alternative Purification Kit for Screening and Confirmation Procedures

The new MAIIA EPO Purification Gel Kit 7D3 was validated for urine and compared to the MAIIA EPO Purification Gel…

Associations Between Self‐Reported Cocaine Use Patterns and Cocaine and Its Metabolites in Hair: Implications for Clinical and Forensic Practices

This study demonstrates that concentrations of cocaine and its main metabolites in hair reliably predict an individual’s actual intensity of…

A Survey of Melatonin in Dietary Supplement Products Sold in the United States

An LC-MS/MS method was validated to measure melatonin and two degradation products in dietary supplements in a broad range of…

Metabolic Characterization of Vamorolone in Human Liver Microsomes: Implications for Anti‐Doping

Vamorolone, a next-gen glucocorticoid, was studied for its metabolic profile in vitro using HLMs and LC-HRMS, revealing key metabolites that inform…