13C/12C-Analysis of urinary epitestosterone

von Schänzer, Wilhelm (Leiter) ...
Deutsche Sporthochschule Köln / Institut für Biochemie
Projektlaufzeit: 12/2007-12/2008

Genotype-dependent metabolism of exogenous testosterone : new biomarkers result in prolonged detectability

von Piper, Thomas (Autor), ... Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in Drug testing and analysis, 8 (2016), 11/12 (34th Cologne workshop: Advances in sports drug testing), S. 1163-1173, Lit.

Determination of 13C/12C ratios of endogenous urinary steroids excreted as sulphates : method validation and reference population

von Piper, Thomas (Autor), ... Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Recent advances in doping analysis (17) : Proceedings of the Manfred Donike Workshop ; 27th Cologne Workshop on Dope Analysis ; 1st to 6th March 2009, Köln: Sportverl. Strauß (Verlag), 2009, S. 237-240, Lit.

Degradation of urine samples and its influence on the 13C/12C ratios of excreted steroids

von Piper, Thomas (Autor), ... Geyer, Hans (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Drug testing and analysis, 2 (2010), 11/12, S. 620-629, Lit.

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.

Aspekte der modernen Dopinganalytik

von Thomas, Andreas (Autor), ... Piper, Thomas (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in Pharmakon, 4 (2016), 1 (Doping), S. 17-21, Lit.

Determination of 13C/12C ratios of endogenous urinary steroids excreted as sulpho conjugates

von Piper, Thomas (Autor), ... Opfermann, Georg (Autor), Thevis, Mario (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 24 (2010), 21, S. 3171-3181, Lit.

Investigations on changes in 13C/12C ratios of endogenous urinary steroids after pregnenolone administration

von Piper, Thomas (Autor), ... Schlug, Christoph (Autor), Mareck, Ute (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Drug testing and analysis, 3 (2011), 5, S. 283-290, Lit.

Expanding sports drug testing assays : mass spectrometric characterization of the selective androgen receptor modulator drug candidates RAD140 and ACP‐105

von Thevis, Mario (Autor), ... Piper, Thomas (Autor), Beuck, Simon (Autor), Geyer, Hans (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 27 (2013), 11, S. 1173-1182, Lit.

Investigations on carbon isotope ratios and concentrations of urinary formestane

von Piper, Thomas (Autor), ... Fußhöller, Gregor (Autor), Emery, Caroline (Autor), Schänzer, Wilhelm (Autor), Saugy, Martial (Autor)
Erschienen in Drug testing and analysis, 4 (2012), 12 (Stable isotope ratio analysis in sports anti-doping), S. 942-950, Lit.

Determination of 13C/12C ratios of urinary excreted boldenone and its main metabolite 5beta-androst-1-en-17beta-ol-3-one

von Piper, Thomas (Autor), ... Geyer, Hans (Autor), Gougoulidis, Vassilios (Autor), Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Drug testing and analysis, 2 (2010), 5, S. 217–224, Lit.

Improved performance and maintenance in gas chromatography/isotope ratio mass spectrometry by precolumn solvent removal

von Flenker, Ulrich (Autor), ... Hebestreit, Moritz (Autor), Piper, Thomas (Autor), Hülsemann, Frank (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Analytical chemistry, 79 (2007), 11, S. 4162-4168, Lit.

Liquid chromatography-high resolution/high accuracy (tandem) mass spectrometry-based identification of in vivo generated metabolites of the selective androgen receptor modulator AC...

von Thevis, Mario (Autor), ... Thomas, Andreas (Autor), Piper, Thomas (Autor), Krug, Oliver (Autor), Delahaut, Philippe (Autor), Schänzer, Wilhelm (Autor)
Erschienen in European journal of mass spectrometry, 20 (2014), 1, S. 73-83, Lit.

Studies on the in vivo metabolism of methylstenbolone and detection of novel long term metabolites for doping control analysis

von Piper, Thomas (Autor), ... Fußhöller, Gregor (Autor), Schänzer, Wilhelm (Autor), Lagojda, Andreas (Autor), Kuehne, Dirk (Autor), Thevis, Mario (Autor)
Erschienen in Drug testing and analysis, 11 (2019), 11/12 (37th Cologne workshop: Advances in sports drug testing), S. 1644-1655, Lit.

Quantifying cobalt in doping control urine samples : a pilot study

von Krug, Oliver (Autor), ... Kutscher, Daniel (Autor), Piper, Thomas (Autor), Geyer, Hans (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in Drug testing and analysis, 6 (2014), 11/12 (32nd Cologne workshop: Advances in sports drug testing), S. 1186-1190, 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.

Quantification of AICAR-ribotide concentrations in red blood cells by means of LC-MS/MS

von Thomas, Andreas (Autor), ... Vogel, Matthias (Autor), Piper, Thomas (Autor), Krug, Oliver (Autor), Beuck, Simon (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in Analytical and bioanalytical chemistry, 405 (2013), 30, S. 9703-9709, Lit.

Urine analysis concerning xenon for doping control purposes

von Thevis, Mario (Autor), ... Piper, Thomas (Autor), Geyer, Hans (Autor), Schaefer, Maximilian S. (Autor), Schneemann, Julia (Autor), Kienbaum, Peter (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 29 (2014), 1, S. 61-66, Lit.

Monitoring 2-phenylethanamine and 2-(3-hydroxyphenyl)acetamide sulfate in doping controls

von Sigmund, Gerd (Autor), ... Dib, Josef (Autor), Tretzel, Laura (Autor), Piper, Thomas (Autor), Bosse, Christina (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in Drug testing and analysis, 7 (2015), 11/12 (33rd Cologne workshop: Advances in sports drug testing), S. 1057-1062, Lit.

Measuring xenon in human plasma and blood by gas chromatography / mass spectrometry

von Thevis, Mario (Autor), ... Piper, Thomas (Autor), Geyer, Hans (Autor), Thomas, Andreas (Autor), Schaefer, Maximilian S. (Autor), Kienbaum, Peter (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 28 (2014), 13, S. 1501–1506, Lit.