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Detection of the selective androgen receptor modulator S-4 (Andarine) in a doping control sample.
Starcevic B, Ahrens BD, Butch AW. Starcevic B, et al. Among authors: butch aw. Drug Test Anal. 2013 May;5(5):377-9. doi: 10.1002/dta.1466. Epub 2013 Feb 21. Drug Test Anal. 2013. PMID: 23427117 No abstract available.
The influence of small doses of ethanol on the urinary testosterone to epitestosterone ratio in men and women.
Albeiroti S, Ahrens BD, Sobolevskii T, Butch AW. Albeiroti S, et al. Among authors: butch aw. Drug Test Anal. 2018 Mar;10(3):575-583. doi: 10.1002/dta.2241. Epub 2017 Aug 1. Drug Test Anal. 2018. PMID: 28671321
Carbon isotope ratio mass spectrometry for detection of endogenous steroid use: a testing strategy.
Ahrens BD, Butch AW. Ahrens BD, et al. Among authors: butch aw. Drug Test Anal. 2013 Jul;5(7):534-40. doi: 10.1002/dta.1447. Epub 2013 Jan 10. Drug Test Anal. 2013. PMID: 23303562
Urine reference intervals for human chorionic gonadotropin (hCG) isoforms by immunoextraction-tandem mass spectrometry to detect hCG use.
Butch AW, Ahrens BD, Avliyakulov NK. Butch AW, et al. Drug Test Anal. 2018 Jun;10(6):956-960. doi: 10.1002/dta.2333. Epub 2017 Nov 27. Drug Test Anal. 2018. PMID: 29098788
Urinary human chorionic gonadotropin isoform concentrations in doping control samples.
Butch AW, Woldemariam GA. Butch AW, et al. Drug Test Anal. 2016 Nov;8(11-12):1147-1151. doi: 10.1002/dta.2061. Epub 2016 Sep 29. Drug Test Anal. 2016. PMID: 27594536
Adverse analytical findings with clenbuterol among U-17 soccer players attributed to food contamination issues.
Thevis M, Geyer L, Geyer H, Guddat S, Dvorak J, Butch A, Sterk SS, Schänzer W. Thevis M, et al. Drug Test Anal. 2013 May;5(5):372-6. doi: 10.1002/dta.1471. Epub 2013 Apr 4. Drug Test Anal. 2013. PMID: 23559541
Detection of prohibited substances by liquid chromatography tandem mass spectrometry for sports doping control.
Ahrens BD, Starcevic B, Butch AW. Ahrens BD, et al. Among authors: butch aw. Methods Mol Biol. 2012;902:115-28. doi: 10.1007/978-1-61779-934-1_10. Methods Mol Biol. 2012. PMID: 22767112
Detection of Stimulants and Narcotics by Liquid Chromatography-Tandem Mass Spectrometry and Gas Chromatography-Mass Spectrometry for Sports Doping Control.
Ahrens BD, Kucherova Y, Butch AW. Ahrens BD, et al. Among authors: butch aw. Methods Mol Biol. 2016;1383:247-63. doi: 10.1007/978-1-4939-3252-8_26. Methods Mol Biol. 2016. PMID: 26660193
Genetic variations in UDP-glucuronosyl transferase 2B17: implications for testosterone excretion profiling and doping control programs.
Starcevic B, Butch AW. Starcevic B, et al. Among authors: butch aw. Clin Chem. 2008 Dec;54(12):1945-7. doi: 10.1373/clinchem.2008.110106. Epub 2008 Oct 16. Clin Chem. 2008. PMID: 18927247 No abstract available.
Immunoextraction-tandem mass spectrometry method for measuring intact human chorionic gonadotropin, free β-subunit, and β-subunit core fragment in urine.
Woldemariam GA, Butch AW. Woldemariam GA, et al. Among authors: butch aw. Clin Chem. 2014 Aug;60(8):1089-97. doi: 10.1373/clinchem.2014.222703. Epub 2014 Jun 4. Clin Chem. 2014. PMID: 24899693 Free PMC article.
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