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51 results
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Comprehensive screening of anabolic steroids, corticosteroids, and acidic drugs in horse urine by solid-phase extraction and liquid chromatography-mass spectrometry.
Ho EN, Leung DK, Wan TS, Yu NH. Ho EN, et al. Among authors: leung dk. J Chromatogr A. 2006 Jul 7;1120(1-2):38-53. doi: 10.1016/j.chroma.2006.03.089. Epub 2006 May 2. J Chromatogr A. 2006. PMID: 16631183
Screening of anabolic steroids in horse urine by liquid chromatography-tandem mass spectrometry.
Yu NH, Ho EN, Leung DK, Wan TS. Yu NH, et al. Among authors: leung dk. J Pharm Biomed Anal. 2005 Apr 29;37(5):1031-8. doi: 10.1016/j.jpba.2004.08.041. J Pharm Biomed Anal. 2005. PMID: 15862683
High-throughput screening of corticosteroids and basic drugs in horse urine by liquid chromatography-tandem mass spectrometry.
Leung GN, Chung EW, Ho EN, Kwok WH, Leung DK, Tang FP, Wan TS, Yu NH. Leung GN, et al. Among authors: leung dk. J Chromatogr B Analyt Technol Biomed Life Sci. 2005 Oct 15;825(1):47-56. doi: 10.1016/j.jchromb.2004.12.039. Epub 2005 Jan 26. J Chromatogr B Analyt Technol Biomed Life Sci. 2005. PMID: 16154522
High throughput screening of sub-ppb levels of basic drugs in equine plasma by liquid chromatography-tandem mass spectrometry.
Leung GN, Leung DK, Wan TS, Wong CH. Leung GN, et al. Among authors: leung dk. J Chromatogr A. 2007 Jul 13;1156(1-2):271-9. doi: 10.1016/j.chroma.2006.10.006. Epub 2006 Oct 19. J Chromatogr A. 2007. PMID: 17054971
Metabolic studies of mesterolone in horses.
Ho EN, Leung DK, Leung GN, Wan TS, Wong HN, Xu X, Yeung JH. Ho EN, et al. Among authors: leung dk, leung gn. Anal Chim Acta. 2007 Jul 16;596(1):149-55. doi: 10.1016/j.aca.2007.05.052. Epub 2007 Jun 3. Anal Chim Acta. 2007. PMID: 17616252
A bottom-up approach in estimating the measurement uncertainty and other important considerations for quantitative analyses in drug testing for horses.
Leung GN, Ho EN, Kwok WH, Leung DK, Tang FP, Wan TS, Wong AS, Wong CH, Wong JK, Yu NH. Leung GN, et al. Among authors: leung dk. J Chromatogr A. 2007 Sep 7;1163(1-2):237-46. doi: 10.1016/j.chroma.2007.06.035. Epub 2007 Jun 27. J Chromatogr A. 2007. PMID: 17628571
Unusual observations during steroid analysis.
Kwok WH, Leung DK, Leung GN, Tang FP, Wan TS, Wong CH, Wong JK. Kwok WH, et al. Among authors: leung dk, leung gn. Rapid Commun Mass Spectrom. 2008;22(5):682-6. doi: 10.1002/rcm.3420. Rapid Commun Mass Spectrom. 2008. PMID: 18247405
Identification of cryptorchidism in horses by analysing urine samples with gas chromatography/mass spectrometry.
Leung DK, Tang FP, Wan TS, Wong JK. Leung DK, et al. Vet J. 2011 Jan;187(1):60-4. doi: 10.1016/j.tvjl.2009.10.010. Epub 2009 Nov 14. Vet J. 2011. PMID: 19914849
Screening of drugs in equine plasma using automated on-line solid-phase extraction coupled with liquid chromatography-tandem mass spectrometry.
Kwok WH, Leung DK, Leung GN, Wan TS, Wong CH, Wong JK. Kwok WH, et al. Among authors: leung dk, leung gn. J Chromatogr A. 2010 May 7;1217(19):3289-96. doi: 10.1016/j.chroma.2010.01.023. Epub 2010 Jan 18. J Chromatogr A. 2010. PMID: 20122690
Rapid screening of anabolic steroids in horse urine with ultra-high-performance liquid chromatography/tandem mass spectrometry after chemical derivatisation.
Wong CH, Leung DK, Tang FP, Wong JK, Yu NH, Wan TS. Wong CH, et al. Among authors: leung dk. J Chromatogr A. 2012 Apr 6;1232:257-65. doi: 10.1016/j.chroma.2011.12.095. Epub 2012 Jan 10. J Chromatogr A. 2012. PMID: 22265177
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