Determination of the deuterium/hydrogen ratio of endogenous urinary steroids for doping control purposes

von Piper, Thomas (Autor), ... Thevis, Mario (Autor), Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 23 (2009), 13, S. 1917-1926, Lit.

Quantitative analysis of urinary glycerol levels for doping control purposes using gas chromatography-mass spectrometry

von Thevis, Mario (Autor), ... Guddat, Sven (Autor), Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in European journal of mass spectrometry, 14 (2008), 3, S. 117–125, Lit.

Doping-control analysis of the 5[alpha]-reductase inhibitor finasteride : determination of its influence on urinary steroid profiles and detection of its major urinary metabolite

von Thevis, Mario (Autor), ... Geyer, Hans (Autor), Mareck, Ute (Autor), Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Therapeutic drug monitoring, 29 (2007), 2, S. 236-247, Lit.

Detection of dehydroepiandrosterone misuse by means of gas chromatography-combustion-isotope ratio mass spectrometry

von Mareck, Ute (Autor), ... Geyer, Hans (Autor), Flenker, Ulrich (Autor), Piper, Thomas (Autor), Thevis, Mario (Autor), Schänzer, Wilhelm (Autor)
Erschienen in European journal of mass spectrometry, 13 (2007), 6, S. 419-426, Lit.

Intracrine androgen metabolism : fundamentals and a new approach to make use of 13C/12C signals of endogenous steroids

von Flenker, Ulrich (Autor), ... Riemann, Phillip (Autor), Hülsemann, Frank (Autor), Gougoulidis, Vassilios (Autor), Thevis, Mario (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Recent advances in doping analysis (26) : Proceedings of the Manfred Donike Workshop ; 36th Cologne Workshop on Dope Analysis ; 23rd to 26th April 2018, Hellenthal: Sportverl. Strauß (Verlag), 2018, S. 36-42, Lit.

Comparison of hGH serum concentrations of Caucasian and African top athletes : an ethnicity study

von Kohler, Maxie (Autor), ... Gotzmann, Andrea (Autor), Görgens, Christian (Autor), Flenker, Ulrich (Autor), Thevis, Mario (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Recent advances in doping analysis (18) : Proceedings of the Manfred-Donike-Workshop ; 28th Cologne Workshop on Dope Analysis , 7th to 12th March 2010, Köln: Sportverl. Strauß (Verlag), 2010, S. 196-199, Lit.

Determination of 13C/12C ratios of endogenous urinary steroids : method validation, reference population and application to doping control purposes

von Piper, Thomas (Autor), ... Mareck, Ute (Autor), Geyer, Hans (Autor), Flenker, Ulrich (Autor), Thevis, Mario (Autor), Platen, Petra (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 22 (2008), 14, S. 2161-2175, Lit.

Case Study : atypical δ13C values of urinary norandrosterone

von Hülsemann, Frank (Autor), ... Gougoulidis, Vassilios (Autor), Schertel, Thomas (Autor), Fußhöller, Gregor (Autor), Flenker, Ulrich (Autor), Piper, Thomas (Autor), Thevis, Mario (Autor)
Erschienen in Drug testing and analysis, 10 (2018), 11/12 (36th Cologne workshop: Advances in sports drug testing), S. 1728-1733, Lit.

Determination of the origin of urinary norandrosterone traces by gas chromatography combustion isotope ratio mass spectrometry

von Hebestreit, Moritz (Autor), ... Flenker, Ulrich (Autor), Fußhöller, Gregor (Autor), Geyer, Hans (Autor), Güntner, Ute (Autor), Mareck, Ute (Autor), Piper, Thomas (Autor), Thevis, Mario (Autor), Ayotte, Christiane (Autor), Schänzer, Wilhelm (Autor)
Erschienen in The Analyst, 131 (2006), 9, S. 1021-1026, Lit.

Determination of salbutamol and salbutamol glucuronide in human urine by means of liquid chromatography-tandem mass spectrometry

von Mareck, Ute (Autor), ... Guddat, Sven (Autor), Schwenke, Anne (Autor), Beuck, Simon (Autor), Geyer, Hans (Autor), Flenker, Ulrich (Autor), Elers, Jimmi (Autor), Backer, Vibeke (Autor), Thevis, Mario (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Drug testing and analysis, 3 (2011), 11/12 (29th Cologne Workshop: Advances in Sports Drug Testing), S. 820-827, Lit.

Traditional Chinese medicine and sports drug testing : identification of natural steroid administration in doping control urine samples resulting from musk (pod) extracts

von Thevis, Mario (Autor), ... Schänzer, Wilhelm (Autor), Geyer, Hans (Autor), Thieme, Detlef (Autor), Große, Joachim (Autor), Rautenberg, Claudia (Autor), Flenker, Ulrich (Autor), Beuck, Simon (Autor), Thomas, Andreas (Autor), Holland, Ruben (Autor), Dvorak, Jiri (Autor)
Erschienen in British journal of sports medicine, 47 (2013), 2, S. 109-114, Lit.

Rapid determination of urinary di(2-ethylhexyl) phthalate metabolites based on liquid chromatography/tandem mass spectrometry as a marker for blood transfusion in sports drug testi...

von Solymos, Emese (Autor), ... Guddat, Sven (Autor), Geyer, Hans (Autor), Flenker, Ulrich (Autor), Thomas, Andreas (Autor), Segura, Jordi (Autor), Ventura, Rosa Alemany (Autor), Platen, Petra (Autor), Schulte-Mattler, Martin (Autor), Thevis, Mario (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Analytical and bioanalytical chemistry, 401 (2011), 2, S. 517-528, Lit.