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- E-ISSN 2093-8950
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Simultaneous Liquid Chromatography Tandem Mass Spectrometric Determination of 35 Prohibited Substances in Equine Plasma for Doping Control
Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2022, v.13 no.4, pp.158-165
https://doi.org/10.5478/MSL.2022.13.4.158
(Korea Racing Authority)
(Korea Racing Authority)
(Hanyang University)
(Korea Racing Authority)
(Hanyang University)
Kwak,
Y. B., Yu,
J., &
Yoo,
H.
H.
(2022). Simultaneous Liquid Chromatography Tandem Mass Spectrometric Determination of 35 Prohibited Substances in Equine Plasma for Doping Control. Mass Spectrometry Letters, 13(4), 158-165, https://doi.org/10.5478/MSL.2022.13.4.158
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Abstract
Many therapeutic class drugs such as beta-blocker, corticosteroids, NSAIDs, etc are prohibited substances in the horse racing industry. Liquid chromatography-tandem mass spectrometry (LC–MS/MS) technology makes it possible to isolate drugs from interference, enables various drug analyses in complex biological samples due to its sensitive sensitivity, and has been successfully applied to doping control. In this paper, we describe a rapid and sensitive method based on solid-phase extraction (SPE) using solid phase cartridge and LC–MS/MS to screen for different class’s 35 drug targets in equine plasma. Plasma samples were pretreated by SPE with the NEXUS cartridge consisted non-polar carbon resin and minimum buffer sol- vent. Chromatographic separation of the analytes was performed on ACQUITY HSS C18 column (2.1 × 150 mm, 1.8 µm). The elution gradient was conducted with 5 mM ammonium formate (pH 3.0) in distilled water and 0.1% formic acid in acetonitrile at a flow rate of 0.25 mL/min. The selected reaction monitoring (SRM) mode was used for drug screening with multiple transitions in the positive ionization mode. The specificity, limit of detection, recovery, and stability was evaluated for validation. The method was found to be sensitive and reproducible for drug screening. The method was applied to plasma sample analysis for the proficiency test from the Association of Racing Chemist.
- keywords
- Doping control, Equine plasma, LC–MS⁄MS
- Submission Date
- 2022-12-04
- Revised Date
- 2022-12-21
- Accepted Date
- 2022-12-23
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