Results 241 to 250 of about 1,369,459 (360)

Changing trends in anabolic‐androgenic steroid use within Scottish prisons: Detection, prevalence, and quantitation

open access: yesDrug Testing and Analysis, EarlyView.
This study reports the qualitative and quantitative detection of anabolic‐androgenic steroids (AASs) in seized samples from prisons. Since 2022 there has been an increase in AAS detections with oxymetholone the most prevalent AAS, followed by metandienone, methyltestosterone, and oxandrolone.
Caitlyn Norman   +4 more
wiley   +1 more source

Improving the Determination of Carbon Isotope Ratios of Endogenous Steroids Found in Human Serum

open access: yesDrug Testing and Analysis, EarlyView.
A method employing high‐performance liquid chromatographic sample cleanup to determine the carbon isotope ratios of steroids found in human serum was developed and fully validated. A reference population encompassing more than 120 male and female athlete samples was investigated in order to establish population‐based thresholds for Δ‐values.
Thomas Piper, Mario Thevis
wiley   +1 more source

Rapid Analytical Method for Quantification of Gamma‐Hydroxybutyrate (GHB) in Hair by UPLC‐MS/MS

open access: yesDrug Testing and Analysis, EarlyView.
A rapid and simple UPLC‐MS/MS method for quantification of GHB in 10 mg of hair was developed. The method was satisfactorily validated, showing a linear range of 0.5–50 ng/mg, which allows us to quantify endogenous and exogenous GHB concentrations.
Miriam Blanco‐Ces   +5 more
wiley   +1 more source

Skeletal Muscle Memory: An Update From the Antidoping Perspective

open access: yesDrug Testing and Analysis, EarlyView.
ABSTRACT This narrative review explores the concept of muscle memory, focusing on the physiological and biochemical mechanisms underlying information retention in skeletal muscle tissue as it relates to antidoping. The discussion encompasses the role of satellite cells (SCs) in myonuclei recruitment, resulting in increased myonuclear density and ...
Claire Traversa
wiley   +1 more source

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

open access: yesDrug Testing and Analysis, EarlyView.
This study demonstrates that concentrations of cocaine and its main metabolites in hair reliably predict an individual's actual intensity of cocaine use and effectively differentiate between dependent and non‐dependent users. ABSTRACT In forensic toxicology, it has been debated if hair testing allows an estimation of the intensity of cocaine use—an ...
Simon Grison   +4 more
wiley   +1 more source

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