Thomas Piper - Dissemin

All papers authored by Thomas Piper

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2020 Thomas Piper

, Gregor Fusshöller, Hans Geyer, Ani Toboc, Mădălin‐George Dănilă

, Mario Thevis

Detecting the misuse of 7‐oxo‐DHEA by means of carbon isotope ratio mass spectrometry in doping control analysis

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2017 Thomas Piper

, Lena-Maria Mehling, Annika Spottke, Anna Heidbreder, Peter Young, Burkhard Madea, Cornelius Hess, Wilhelm Schänzer, Mario Thevis

Potential of GHB phase-II-metabolites to complement current approaches in GHB post administration detection

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Mario Thevis

, Thomas Piper

, Josef Dib, Andreas Lagojda, Dirk Kühne, Lars Packschies, Hans Geyer, Wilhelm Schänzer

Mass spectrometric characterization of the selective androgen receptor modulator (SARM) YK-11 for doping control purposes: Mass spectrometric characterization of YK-11

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Lena-Maria Mehling, Thomas Piper

, Annika Spottke, Anna Heidbreder, Peter Young, Burkhard Madea, Mario Thevis, Cornelius Hess

GHB-O-β-glucuronide in blood and urine is not a suitable tool for the extension of the detection window after GHB intake

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Thomas Piper

, Mario Thevis

Applications of Isotope Ratio Mass Spectrometry in Sports Drug Testing Accounting for Isotope Fractionation in Analysis of Biological Samples

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2016 Thomas Piper

, Wilhelm Schänzer, Mario Thevis

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

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Lena-Maria Mehling, Thomas Piper

, Josef Dib, Daniel Sejer Pedersen, Burkhard Madea, Cornelius Hess, Mario Thevis

Development and validation of a HPLC–QTOF-MS method for the determination of GHB-β-O-glucuronide and GHB-4-sulfate in plasma and urine

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Matthias Vogel, Josef Dib, Laura Tretzel, Thomas Piper

, Andreas Thomas, Wilhelm Schänzer, Mario Thevis

Analytics of nonpeptidic erythropoietin mimetic agents in sports drug testing employing high-resolution/high-accuracy liquid chromatography-mass spectrometry

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Laura Tretzel, Andreas Thomas, Thomas Piper

, Mikael Hedeland

, Hans Geyer, Wilhelm Schänzer, Mario Thevis

Fully automated determination of nicotine and its major metabolites in whole blood by means of a DBS online-SPE LC-HR-MS/MS approach for sports drug testing

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M. Thevis, O. Krug, T. Piper

, H. Geyer, W. Schänzer

Solutions Advertised as Erythropoiesis-stimulating Products were Found to Contain Undeclared Cobalt and Nickel Species

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2015 Thomas Piper

, Wilhelm Schänzer, Mario Thevis

Revisiting the metabolism of 19-nortestosterone using isotope ratio and high resolution/high accuracy mass spectrometry

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2014 Oliver Krug, Andreas Thomas, Katja Walpurgis, Thomas Piper

, Gerd Sigmund, Wilhelm Schänzer, Tim Laussmann, Mario Thevis

Identification of black market products and potential doping agents in Germany 2010–2013

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Lijun Zhang, Mario Thevis, Thomas Piper

, Maik A. Jochmann, J. Benjamin Wolbert, Dorothea M. Kujawinski, Steffen Wiese, Thorsten Teutenberg, Torsten C. Schmidt

Carbon Isotope Ratio Analysis of Steroids by High-Temperature Liquid Chromatography-Isotope Ratio Mass Spectrometry

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Mario Thevis, Andreas Thomas, Thomas Piper

, Oliver Krug, Philippe Delahaut, Wilhelm Schánzer

Liquid chromatography-high resolution/high accuracy (tandem) mass spectrometry-based identification of in vivo generated metabolites of the selective androgen receptor modulator ACP-105 for doping control purposes

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2013 Andreas Thomas, Matthias Vogel, Thomas Piper

, Oliver Krug, Simon Beuck, Wilhelm Schänzer, Mario Thevis

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

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Thomas Piper

, Caroline Emery, Andreas Thomas, Martial Saugy, Mario Thevis

Combination of carbon isotope ratio with hydrogen isotope ratio determinations in sports drug testing

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2012 Thomas Piper

, Karoline Degenhardt, Eugen Federherr, Andreas Thomas, Mario Thevis, Martial Saugy

Effect of changes in the deuterium content of drinking water on the hydrogen isotope ratio of urinary steroids in the context of sports drug testing

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Thomas Piper

, Norbert Baume, Emanuel Strahm, Caroline Emery, Martial Saugy

Influences of β-HCG administration on carbon isotope ratios of endogenous urinary steroids

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2011 Thomas Piper

, Christoph Schlug, Ute Mareck, Wilhelm Schänzer

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

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Thomas Piper

, Caroline Emery, Martial Saugy

Recent developments in the use of isotope ratio mass spectrometry in sports drug testing

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All papers authored by Thomas Piper