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List of works by Thomas Piper

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

scientific article published in February 2009

6alpha-Methylandrostenedione: gas chromatographic mass spectrometric detection in doping control

scientific article published in January 2008

An in vitro assay approach to investigate the potential impact of different doping agents on the steroid profile

scientific article published on 07 December 2020

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

scientific article

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

scientific article published on 24 August 2017

Carbon isotope ratio analysis of steroids by high-temperature liquid chromatography-isotope ratio mass spectrometry

scientific article

Carbon isotope ratios of endogenous steroids in Belgian Blue and Holstein cattle: Method development, reference population studies and application to steroid misuse control

scientific article

Case Study: Atypical δ13 C values of urinary norandrosterone

scientific article published on 25 October 2018

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

scientific article published on 9 April 2013

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

scientific article published on November 16, 2010

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

scientific article published on 06 March 2020

Detection of dehydroepiandrosterone misuse by means of gas chromatography- combustion-isotope ratio mass spectrometry

scientific article

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

scientific article published on November 2010

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

scientific article published in May 2010

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

scientific article published in July 2008

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

scientific article published in November 2009

Determination of the deuterium/hydrogen ratio of endogenous urinary steroids for doping control purposes.

scientific article

Determination of the origin of urinary norandrosterone traces by gas chromatography combustion isotope ratio mass spectrometry

scientific article published on 28 July 2006

Determination of ¹³C/¹² C ratios of endogenous urinary 5-amino-imidazole-4-carboxamide 1β-D-ribofuranoside (AICAR)

scientific article published on 01 June 2014

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

article by Thomas Piper et al published 6 November 2012 in Analytical and Bioanalytical Chemistry

Epiandrosterone sulfate prolongs the detectability of testosterone, 4-androstenedione, and dihydrotestosterone misuse by means of carbon isotope ratio mass spectrometry.

scientific article published on 24 August 2017

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

scientific article

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

scientific article published on 10 February 2016

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

scientific article published on 13 October 2016

Hydrogen isotope ratio mass spectrometry and high-resolution/high-accuracy mass spectrometry in metabolite identification studies: detecting target compounds for sports drug testing

scientific article published in September 2013

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

scientific article published on 30 August 2014

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

scientific article published on 04 May 2007

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

scientific article published on 17 February 2012

Investigations on carbon isotope ratios and concentrations of urinary formestane

scientific article published on 22 February 2012

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

scientific article published on April 28, 2011

Investigations on hydrogen isotope ratios of endogenous urinary steroids: reference-population-based thresholds and proof-of-concept

scientific article published on 19 September 2012

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

scientific article published in January 2014

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

scientific article

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

scientific article published in July 2014

Metabolism of androsta-1,4,6-triene-3,17-dione and detection by gas chromatography/mass spectrometry in doping control.

scientific article

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

scientific article

Nickel in equine sports drug testing - pilot study results on urinary nickel concentrations

scientific article

Optimization of an online heart-cutting multidimensional gas chromatography clean-up step for isotopic ratio mass spectrometry and simultaneous quadrupole mass spectrometry measurements of endogenous anabolic steroid in urine

scientific article published on 14 October 2016

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

scientific article

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

scientific article published on 05 July 2013

Quantifying cobalt in doping control urine samples--a pilot study

scientific article published on 17 July 2014

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

scientific article published on 30 March 2011

Reporting and managing elevated testosterone/epitestosterone ratios--novel aspects after five years' experience

scientific article published on 15 November 2010

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

scientific article published on 14 December 2015

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

scientific article published on 7 January 2016

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

scientific article published on 01 November 2019

Studies on the in vivo metabolism of the SARM YK11: Identification and characterization of metabolites potentially useful for doping controls

scientific article published on 18 November 2018

Urine analysis concerning xenon for doping control purposes.

scientific article published on January 2015

Xenon elimination kinetics following brief exposure

scientific article published on 24 June 2016

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