Nutritional supplements cross-contaminated and faked with doping substances

von Geyer, Hans (Autor), ... Parr, Maria Kristina (Autor), Köhler, Karsten (Autor), Mareck, Ute (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in Journal of mass spectrometry : JMS, 43 (2008), 7 (Sports doping explored), S. 892-902, 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 manipulation in doping control urine sample collection : a multidisciplinary approach to determine identical urine samples

von Thevis, Mario (Autor), ... Geyer, Hans (Autor), Mareck, Ute (Autor), Sigmund, Gerd (Autor), Henke, Jürgen (Autor), Henke, Lotte (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Analytical and bioanalytical chemistry, 388 (2007), 7, S. 1539-1543, Lit.

Identification of the aromatase inhibitor letrozole in urine by gas chromatography/mass spectrometry

von Mareck, Ute (Autor), ... Sigmund, Gerd (Autor), Opfermann, Georg (Autor), Geyer, Hans (Autor), Thevis, Mario (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 19 (2005), 24, S. 3689-3693, Lit.

High amounts of 17-methylated anabolic-androgenic steroids in effervescent tablets on the dietary supplement market

von Parr, Maria K. (Autor), ... Geyer, Hans (Autor), Hoffmann, Bernhard (Autor), Köhler, Karsten (Autor), Mareck, Ute (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Biomedical chromatography, 21 (2007), 2, S. 164-168, 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.

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.

Screening for unknown synthetic steroids in human urine by liquid chromatography-tandem mass spectrometry

von Thevis, Mario (Autor), ... Geyer, Hans (Autor), Mareck, Ute (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Journal of mass spectrometry : JMS, 40 (2005), 7, S. 955-962, Lit.

Factors influencing the steroid profile in doping control analysis

von Mareck, Ute (Autor), ... Geyer, Hans (Autor), Opfermann, Georg (Autor), Thevis, Mario (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Journal of mass spectrometry : JMS, 43 (2008), 7 (Sports doping explored), S. 877-891, 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.

Investigations into the concentration and metabolite profiles of stanozolol and LGD-4033 in blood plasma and seminal fluid using liquid chromatography high-resolution mass spectrom...

von Breuer, Johanna (Autor), ... Thomas, Andreas (Autor), Delahaut, Philippe (Autor), Schänzer, Wilhelm (Autor), Geyer, Hans (Autor), Thevis, Mario (Autor)
Erschienen in Analytical and bioanalytical chemistry, 415 (2023), 4, S. 669–681, Lit.

Proteases in doping control analysis

von Thevis, Mario (Autor), ... Maurer, J. (Autor), Kohler, M. (Autor), Geyer, Hans (Autor), Schänzer, Wilhelm (Autor)
Erschienen in International journal of sports medicine, 28 (2007), 7, S. 545-549, Lit.

Human sports drug testing by mass spectrometry

von Schänzer, Wilhelm (Autor), ... Thevis, Mario (Autor)
Erschienen in Mass spectrometry reviews, 36 (2017), 1, S. 16-46, Lit.

Metabolism of human insulin after subcutaneous administration : a possible means to uncover insulin misuse

von Thomas, Andreas (Autor), ... Brinkkötter, Paul (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in Analytica chimica acta, 897 (2015), S. 53-61, Lit.

Global spatial distributions of nitrogen and carbon stable isotope ratios of modern human hair

von Hülsemann, Frank (Autor), ... Lehn, Christine (Autor), Schneider, Sabine (Autor), Jackson, Glen (Autor), Hill, Sarah (Autor), Rossmann, Andreas (Autor), Scheid, Nicole (Autor), Dunn, Philip J.H. (Autor), Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 29 (2015), 22, S. 2111-2121, Lit.

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

von Piper, Thomas (Autor), ... Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in The journal of steroid biochemistry and molecular biology, 162 (2016), S. 80-91, Lit.

Detection of the misuse of steroids in doping control

von Parr, Maria Kristina (Autor), ... Schänzer, Wilhelm (Autor)
Erschienen in The journal of steroid biochemistry and molecular biology, 2010, 121, 3-5, S. 528-537, Lit.

Analytik von Steroidhormonen und Designer-Steroiden

von Schänzer, Wilhelm (Autor), ... Thevis, Mario (Autor)
Erschienen in GIT : Labor-Fachzeitschrift, 2004, 5, S. 440-443, Lit.

Doping und Dopinganalytik : Wirkstoffe und Methoden

von Schänzer, Wilhelm (Autor), ... Thevis, Mario (Autor)
Erschienen in Chest, 38 (2004), 4, S. 230-241, Lit.

Analytical strategies for the detection of non-labelled anabolic androgenic steroids in nutritional supplements

von Parr, M.K. (Autor), ... Geyer, Hans (Autor), Reinhart, U. (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Food additives & contaminants : Part A, 21 (2007), 7, S. 632-640, Lit.