Analytik von Sterioden : Isotopensignatur verrät Doping

von Flenker, Ulrich (Autor), ... Schänzer, Wilhelm (Autor)
Erschienen in Nachrichten aus Chemie Technik und Laboratorium, 73 (2008) (Analytica pro : das aktuelle Messe-Magzin), S. 22-23, Lit.

δ13C-Values of endogenous urinary steroids

von Flenker, Ulrich (Autor), ... Güntner, Ute (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Steroids, 73 (2008), 4, S. 408-416, 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.

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

von Flenker, Ulrich (Autor), ... Schänzer, Wilhelm (Autor), Piper, Thomas (Autor)
Erschienen in Recent advances in doping analysis (16) : Proceedings of the Manfred Donike Workshop ; 26th Cologne Workshop on Dope Analysis ; 24th to 29th February 2008, Köln: Sportverl. Strauß (Verlag), 2008, S. 151, Lit.

13C/12C-Verhältnisse endogener Steroide

von Flenker, Ulrich (Autor), ... Schänzer, Wilhelm (Gutachter), Rethemeyer, Janet (Gutachter) Köln: Deutsche Sporthochschule Köln / Institut für Biochemie (Verlag), 2012, XV, 167 S. + CD-Rom, Lit.

Hardware-considerations for purification of steroids by normal-phase HPLC for GC-C-IRMS

von Hebestreit, M. (Autor), ... Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Recent advances in doping analysis (12) : Proceedings of the Manfred Donike Workshop ; 22th Cologne Workshop on Dope Analysis ; 7th to 12th March 2004, Köln: Sport u. Buch Strauß (Verlag), 2004, S. 323-327, Lit.

The assay of endogenous and exogenous anabolic androgenic steroids

von Parr, Maria Kristina (Autor), ... Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Hormone use and abuse by athletes, Berlin: Springer (Verlag), 2011, S. 121-130, Lit.

Sports-related issues and biochemistry of natural and synthetic anabolic substances

von Parr, Maria K. (Autor), ... Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Endocrinology and metabolism clinics of North America, 39 (2010), 1, S. 45-57, Lit.

Comparison of normal-phase and reverse-phase HPLC clean up for 13C/12C analysis of endogenous urinary steroids

von Gougoulidis, V. (Autor), ... Piper, T. (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. 189-192, Lit.

13C/12C-Isotopen-Massenspektrometrie

von Schänzer, Wilhelm (Leiter) ...
Deutsche Sporthochschule Köln / Institut für Biochemie
Projektlaufzeit: 01/1996-

Do we excrete what we eat? : analysis of stable nitrogen isotope ratios of human urinary urea

von Hülsemann, Frank (Autor), ... Köhler, Karsten (Autor), Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 31 (2017), 14, S. 1221-1227, 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.

Isolation of bicarbonate from equine urine for isotope ratio mass spectrometry

von Hülsemann, Frank (Autor), ... Flenker, Ulrich (Autor), Machnik, Marc (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Isotopes in environmental and health studies, 43 (2007), 4, S. 267-273, Lit.

Effect of a controlled dietary change on carbon and nitrogen stable isotope ratios of human hair

von Hülsemann, Frank (Autor), ... Flenker, Ulrich (Autor), Köhler, Karsten (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Rapid communications in mass spectrometry, 23 (2009), 16, S. 2448-54, 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.

13C/12C Ratios of endogenous urinary steroids investigated for doping control purposes

von Piper, Thomas (Autor), ... Flenker, Ulrich (Autor), Mareck, Ute (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Drug testing and analysis, 1 (2009), 2, S. 65-72, Lit.

A new, effective and robust method to couple gas chromatography and isotope ratio mass spectrometry

von Flenker, Ulrich (Autor), ... Hebestreit, Moritz (Autor), Piper, Thomas (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Recent advances in doping analysis (14) : Proceedings of the Manfred Donike Workshop ; 24th Cologne Workshop on Dope Analysis ; 4th to 9th June 2006, Köln: Sportverl. Strauß (Verlag), 2006, S. 299-306, Lit.

Stability tests for hematological parameters in antidoping analyses

von Voss, Sven Christian (Autor), ... Flenker, Ulrich (Autor), Majer, Bettina (Autor), Schänzer, Wilhelm (Autor)
Erschienen in Laboratory hematology, 14 (2008), 3, S. 24-29, Lit.

Stable carbon isotope discrimination by human 3-hydroxy-3-methylglutaryl-coenzyme A reductase

von Lüdke, Svena M. (Autor), ... Flenker, Ulrich (Autor), Schänzer, Wilhelm (Autor), Schomburg, Dietmar (Autor)
Erschienen in Journal of lipid research, 49 (2008), 12, 2620-2626, 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.