Nutritional supplements cross-contaminated and faked with prohormones, "classic" anabolic steroids and "designer steroids"

von Geyer, Hans (Autor), ... Köhler, Karsten (Autor), Mareck, Ute (Autor), Parr, Maria Kristina (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor)
Erschienen in Effectiveness of the anti-doping fight: 2006 IAAF World Anti-Doping Symposium : book of proceedings ; 30 Septembre - 2 October 2006, Lausanne, Switzerland, Monaco: 2007, S. 95-99, Lit.

Characterisation of the pharmacological profile of desoxymethyltestosterone (Madol), a steroid misused for doping

von Diel, Patrick Rene (Autor), ... Friedel, Angelika (Autor), Geyer, Hans (Autor), Kamber, Matthias (Autor), Laudenbach-Leschowsky, Ute (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor), Vollmer, Günter (Autor), Zierau, Oliver (Autor)
Erschienen in Toxicology letters, 169 (2007), 1, S. 64-71, Lit.

Determination of Synacthen in human plasma using immunoaffinity purification and liquid chromatography/tandem mass spectrometry

von Thevis, Mario (Autor), ... Bredehöft, Michael (Autor), Geyer, Hans (Autor), Kamber, Matthias (Autor), Delahaut, Philippe (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 20 (2006), 23, S. 3551-3556, Lit.

Determination of therapeutics with growth-hormone secretagogue activity in human urine for doping control purposes

von Thevis, Mario (Autor), ... Wilkens, Frauke (Autor), Geyer, Hans (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 20 (2006), 22, S. 3393-3402, 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.

Tetrahydrogestrinone is a potent but unselective binding steroid and affects glucocorticoid signalling in the liver

von Friedel, Angelika (Autor), ... Geyer, Hans (Autor), Kamber, Matthias (Autor), Laudenbach-Leschowsky, Ute (Autor), Schänzer, Wilhelm (Autor), Thevis, Mario (Autor), Vollmer, Günter (Autor), Zierau, Oliver (Autor), Diel, Patrick Rene (Autor)
Erschienen in Toxicology letters, 164 (2006), 1, S. 16-23, Lit.

Identification of fentanyl, alfentanil, sufentanil, remifentanil and their major metabolites in human urine by liquid chromatography/tandem mass spectrometry for doping control pur...

von Thevis, Mario (Autor), ... Geyer, Hans (Autor), Bahr, Daniel (Autor), Schänzer, Wilhelm (Autor)
Erschienen in European journal of mass spectrometry, 11 (2005), 4, S. 419-427, 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.

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.

Dopingkontrollaktivitäten in Deutschland 1989–2006

von Thevis, Mario (Autor), ... Geyer, Hans (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Medizinische Klinik, 103 (2008), 5, S. 282-298, Lit.

Determination of the prevalence of anabolic steroids, stimulants, and selected drugs subject to doping controls among elite sport students using analytical chemistry

von Thevis, Mario (Autor), ... Sauer, Michael (Autor), Geyer, Hans (Autor), Sigmund, Gerd (Autor), Mareck, Ute (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Journal of sports sciences, 26 (2008), 10, S. 1059-1065, Lit.

Clenbuterol marketed as dietary supplement

von Parr, Maria Kristina (Autor), ... Köhler, Karsten (Autor), Geyer, Hans (Autor), Guddat, Sven (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Biomedical chromatography, 22 (2008), 3, S. 298-300, 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.

Ernährung und Aktivität jugendlicher Kaderathleten

von Köhler, Karsten (Autor), ... Braun, Hans (Autor), Geyer, Hans (Autor)
Erschienen in Nachwuchsleistungssport in Nordrhein-Westfalen auf dem Prüfstand : Reader zum Sportgespräch ; 22. Internationaler Workshop am 4. und 5. Juni 2007 in Hattingen im Rahmen des Landesprogramms: "Talentsuche und Talentförderung in Zusammenarbeit von Schule und Verein/Verband" im Sportland Nordrhein-Westfalen, Aachen: Meyer & Meyer (Verlag), 2008, S. 168-172, Lit.

Determination of 13C/12C ratios of urinary epitestosterone and its main metabolites 5- and 5-androstane-3, 17-diol

von Piper, Thomas (Autor), ... Riemann, Phillip (Autor), Opfermann, Georg (Autor), Mareck, Ute (Autor), Geyer, Hans (Autor), Vâjialã, Graziela (Autor), Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Drug testing and analysis, 1 (2009), 11/12, S. 576-586, Lit.

Detection of the arylpropionamide-derived selective androgen receptor modulator (SARM) S-4 (Andarine) in a black-market product

von Thevis, Mario (Autor), ... Geyer, Hans (Autor), Kamber, Matthias (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Drug testing and analysis, 1 (2009), 8, S. 387-392, Lit.

Serum testosterone and urinary excretion of steroid hormone metabolites after administration of a high-dose zinc supplement.

von Köhler, Karsten (Autor), ... Parr, M.K. (Autor), Geyer, Hans (Autor), Mester, Joachim (Autor), Schänzer, Wilhelm (Autor)
Erschienen in European journal of clinical nutrition, 63 (2009), 1, S. 65-70, Lit.

Dietary supplement use among elite young german athletes

von Braun, Hans (Autor), ... Köhler, Karsten (Autor), Geyer, Hans (Autor), Kleinert, Jens (Autor), Mester, Joachim (Autor), Schänzer, Wilhelm (Autor)
Erschienen in International journal of sport nutrition and exercise metabolism, 19 (2009), 1, S. 97-109, Lit.

Stimulants and doping in sport

von Thevis, Mario (Autor), ... Sigmund, Gerd (Autor), Geyer, Hans (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Endocrinology and metabolism clinics of North America, 39 (2010), 1, S. 98-105, Lit.