CSIA issues urgent notice as new tariffs cause pricing chaos for imported chips in China
The escalation in the tariff war has affected the global chip supply chain, causing significant disruption in pricing within China’s…
Trump warns tariffs are coming for electronics after reprieve
President Donald Trump pledged he will still apply tariffs to phones, computers, and popular consumer electronics, downplaying a weekend exemption…
Confirmation of ethanol administration in racing greyhounds by LC‐MS‐MS
Ethanol causes depression of the central nervous system and its use in professional animal racing must be controlled due to…
The effect of incidental ethanol exposures on the formation of blood phosphatidylethanol
Accumulating evidence and international consensus support a 20 μg/L phosphatidylethanol (PEth) cutoff to distinguish abstinence from ethanol consumption. Little research…
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 administration
Bisphosphonates and myo-inositol trispyrophosphate (ITPP) are two classes of difficult-to-detect polar drugs that are prohibited under the rules of racing.…
Doping control of estra‐4,9‐diene‐3,17‐dione in horses
This paper describes the doping control of dienedione in horses. An in vivo metabolism study and the elimination of dienedione…
Elucidating important factors and corresponding method optimization for sensitive detection of small peptide drugs in human urine by solid‐phase extraction and UPLC‐HRMS: The influence of MS scan modes, protein precipitants, and ammonium formate
Several important factors for sensitive detection of small peptide drugs in human urine by SPE and UPLC-HRMS were investigated. The…
Techniques for improving the specificity of sandwich enzyme‐linked immunosorbent assay‐based drug screening
ELISA kits can be modified to improve assay specificity. These techniques allow false-positive results to be excluded, reducing the number…
Dennis Hill
Drug Testing and Analysis, Volume 17, Issue 4, Page 517-517, April 2025.
The analysis of methylamphetamine and para‐hydroxy‐methylamphetamine in post‐mortem hair samples using liquid chromatography–tandem mass spectrometry
We present an analytical method for the determination of methylamphetamine (MA), amphetamine, and para-hydroxy-methylamphetamine (p-OH-MA) in hair. Concentrations of p-OH-MA…