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Employing 11-Ketotestosterone as a Target Analyte for Adrenosterone (11OXO) Administration in Doping Controls.
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- Metabolites (2218-1989), 2024, v. 14, n. 3, p. 141, doi. 10.3390/metabo14030141
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- Article
Determination of urinary deanol‐N‐oxide excretion profiles after ingestion of nutritional supplements containing deanol.
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- Drug Testing & Analysis, 2023, v. 15, n. 11/12, p. 1312, doi. 10.1002/dta.3580
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- Article
Investigations into the human metabolism of ecdysterone.
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- Drug Testing & Analysis, 2023, v. 15, n. 11/12, p. 1503, doi. 10.1002/dta.3582
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- Article
Development of mass spectrometry‐based methods for the detection of 11‐ketotestosterone and 11‐ketodihydrotestosterone.
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- Drug Testing & Analysis, 2023, v. 15, n. 5, p. 566, doi. 10.1002/dta.3442
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- Article
Usefulness of serum androgen isotope ratio mass spectrometry (IRMS) to detect testosterone supplementation in women.
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- Drug Testing & Analysis, 2023, v. 15, n. 4, p. 465, doi. 10.1002/dta.3428
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- Article
SCHOOLS AS PROMOTERS OF ACTIVE LIFESTYLES: A REVIEW.
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- Teachers & Curriculum, 2023, v. 23, n. 1, p. 69, doi. 10.15663/tandc.v23i1.426
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- Article
Addressing recent challenges in isotope ratio mass spectrometry: Development of a method applicable to 1‐androstene‐steroids, 6α‐hydroxy‐androstenedione, and androstatrienedione.
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- Drug Testing & Analysis, 2022, v. 14, n. 11/12, p. 1891, doi. 10.1002/dta.3361
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- Article
AICAr to SAICAr ratio can serve as additional marker of AICAr use.
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- Drug Testing & Analysis, 2022, v. 14, n. 11/12, p. 2017, doi. 10.1002/dta.3399
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- Article
Investigations on the in vivo metabolism of 5α‐androst‐2‐en‐17‐one.
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- Rapid Communications in Mass Spectrometry: RCM, 2022, v. 36, n. 17, p. 1, doi. 10.1002/rcm.9343
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- Article
Investigations in carbon isotope ratios of seized testosterone and boldenone preparations.
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- Drug Testing & Analysis, 2022, v. 14, n. 3, p. 514, doi. 10.1002/dta.3120
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- Article
Urinary phenylethylamine metabolites as potential markers for sports drug testing purposes.
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- Biomedical Chromatography, 2022, v. 36, n. 2, p. 1, doi. 10.1002/bmc.5274
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- Article
Sensitive detection of testosterone and testosterone prohormone administrations based on urinary concentrations and carbon isotope ratios of androsterone and etiocholanolone.
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- Drug Testing & Analysis, 2021, v. 13, n. 11/12, p. 1835, doi. 10.1002/dta.3168
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- Article
Carbon isotope ratios of endogenous steroids found in human serum—method development, validation, and reference population-derived thresholds.
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- Analytical & Bioanalytical Chemistry, 2021, v. 413, n. 22, p. 5655, doi. 10.1007/s00216-021-03439-9
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- Article
An in vitro assay approach to investigate the potential impact of different doping agents on the steroid profile.
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- Drug Testing & Analysis, 2021, v. 13, n. 5, p. 916, doi. 10.1002/dta.2991
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- Article
Triage May Improve Selection to Colonoscopy and Reduce the Number of Unnecessary Colonoscopies.
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- Cancers, 2020, v. 12, n. 9, p. 2610, doi. 10.3390/cancers12092610
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- Article
Detecting the misuse of 7-oxo-DHEA by means of carbon isotope ratio mass spectrometry in doping control analysis.
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- Rapid Communications in Mass Spectrometry: RCM, 2020, v. 34, n. 12, p. 1, doi. 10.1002/rcm.8776
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- Article
Analysis of endogenous steroids in urine by means of multi-immunoaffinity chromatography and isotope ratio mass spectrometry for sports drug testing.
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- Analytical & Bioanalytical Chemistry, 2019, v. 411, n. 28, p. 7563, doi. 10.1007/s00216-019-02169-3
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- Article
Studies on the in vivo metabolism of methylstenbolone and detection of novel long term metabolites for doping control analysis.
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- Drug Testing & Analysis, 2019, v. 11, n. 11/12, p. 1644, doi. 10.1002/dta.2736
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- Article
Increased serological, cancer-associated protein biomarker levels at diagnosis of large bowel adenoma: Risk of subsequent primary malignancy?
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- Acta Oncologica, 2019, v. 58, p. S42, doi. 10.1080/0284186X.2018.1540885
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- Article
Studies on the in vivo metabolism of the SARM YK11: Identification and characterization of metabolites potentially useful for doping controls.
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- Drug Testing & Analysis, 2018, v. 10, n. 11/12, p. 1646, doi. 10.1002/dta.2527
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- Article
Case Study: Atypical δ<sup>13</sup>C values of urinary norandrosterone.
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- Drug Testing & Analysis, 2018, v. 10, n. 11/12, p. 1728, doi. 10.1002/dta.2498
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- Article
Carbon isotope ratios of endogenous steroids in Belgian Blue and Holstein cattle:Method development, reference population studies and application to steroid misuse control.
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- Rapid Communications in Mass Spectrometry: RCM, 2017, v. 31, n. 21, p. 1793, doi. 10.1002/rcm.7964
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- Article
Epiandrosterone sulfate prolongs the detectability of testosterone, 4-androstenedione, and dihydrotestosterone misuse by means of carbon isotope ratio mass spectrometry.
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- Drug Testing & Analysis, 2017, v. 9, n. 11/12, p. 1695, doi. 10.1002/dta.2291
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- Article
Mass spectrometric characterization of the selective androgen receptor modulator (SARM) YK-11 for doping control purposes.
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- Rapid Communications in Mass Spectrometry: RCM, 2017, v. 31, n. 14, p. 1175, doi. 10.1002/rcm.7886
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- Article
Xenon elimination kinetics following brief exposure.
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- Drug Testing & Analysis, 2017, v. 9, n. 5, p. 666, doi. 10.1002/dta.2001
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- Article
Genotype-dependent metabolism of exogenous testosterone - new biomarkers result in prolonged detectability.
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- Drug Testing & Analysis, 2016, v. 8, n. 11/12, p. 1163, doi. 10.1002/dta.2095
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- 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.
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- Drug Testing & Analysis, 2016, v. 8, n. 11/12, p. 1204, doi. 10.1002/dta.2119
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- Article
Analytics of nonpeptidic erythropoietin mimetic agents in sports drug testing employing high-resolution/high-accuracy liquid chromatography-mass spectrometry.
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- Analytical & Bioanalytical Chemistry, 2016, v. 408, n. 23, p. 6431, doi. 10.1007/s00216-016-9761-z
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Monitoring 2-phenylethanamine and 2-(3-hydroxyphenyl)acetamide sulfate in doping controls.
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- Drug Testing & Analysis, 2015, v. 7, n. 11/12, p. 1057, doi. 10.1002/dta.1909
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- Article
Urine analysis concerning xenon for doping control purposes.
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- Rapid Communications in Mass Spectrometry: RCM, 2015, v. 29, n. 1, p. 61, doi. 10.1002/rcm.7080
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- Article
Quantifying cobalt in doping control urine samples - a pilot study.
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- Drug Testing & Analysis, 2014, v. 6, n. 11/12, p. 1186, doi. 10.1002/dta.1694
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- Article
Identification of black market products and potential doping agents in Germany 2010-2013.
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- European Journal of Clinical Pharmacology, 2014, v. 70, n. 11, p. 1303, doi. 10.1007/s00228-014-1743-5
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- Article
Measuring xenon in human plasma and blood by gas chromatography/mass spectrometry.
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- Rapid Communications in Mass Spectrometry: RCM, 2014, v. 28, n. 13, p. 1501, doi. 10.1002/rcm.6926
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- Article
Determination of <sup>13</sup>C/<sup>12</sup>C ratios of endogenous urinary 5-amino-imidazole-4-carboxamide 1β-D-ribofuranoside (AICAR).
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- Rapid Communications in Mass Spectrometry: RCM, 2014, v. 28, n. 11, p. 1194, doi. 10.1002/rcm.6891
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- Article
Quantification of AICAR-ribotide concentrations in red blood cells by means of LC-MS/MS.
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- Analytical & Bioanalytical Chemistry, 2013, v. 405, n. 30, p. 9703, doi. 10.1007/s00216-013-7162-0
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- Article
Hydrogen isotope ratio mass spectrometry and high-resolution/high-accuracy mass spectrometry in metabolite identification studies: Detecting target compounds for sports drug testing.
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- Rapid Communications in Mass Spectrometry: RCM, 2013, v. 27, n. 17, p. 1904, doi. 10.1002/rcm.6648
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- Article
Combination of carbon isotope ratio with hydrogen isotope ratio determinations in sports drug testing.
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- Analytical & Bioanalytical Chemistry, 2013, v. 405, n. 16, p. 5455, doi. 10.1007/s00216-013-6949-3
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Expanding sports drug testing assays: Mass spectrometric characterization of the selective androgen receptor modulator drug candidates RAD140 and ACP-105.
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- Rapid Communications in Mass Spectrometry: RCM, 2013, v. 27, n. 11, p. 1173, doi. 10.1002/rcm.6558
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- Article
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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- Analytical & Bioanalytical Chemistry, 2013, v. 405, n. 9, p. 2911, doi. 10.1007/s00216-012-6504-7
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- Article
Investigations on carbon isotope ratios and concentrations of urinary formestane.
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- Drug Testing & Analysis, 2012, v. 4, n. 12, p. 942, doi. 10.1002/dta.386
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- Article
Investigations on hydrogen isotope ratios of endogenous urinary steroids: reference-population-based thresholds and proof-of-concept.
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- Drug Testing & Analysis, 2012, v. 4, n. 9, p. 717, doi. 10.1002/dta.1416
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- Article
Recent developments in the use of isotope ratio mass spectrometry in sports drug testing.
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- Analytical & Bioanalytical Chemistry, 2011, v. 401, n. 2, p. 433, doi. 10.1007/s00216-011-4886-6
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Investigations on changes in.
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- Drug Testing & Analysis, 2011, v. 3, n. 5, p. 283, doi. 10.1002/dta.281
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- Article
Determination of <sup>13</sup>C/<sup>12</sup>C ratios of endogenous urinary steroids excreted as sulpho conjugates.
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- Rapid Communications in Mass Spectrometry: RCM, 2010, v. 24, n. 21, p. 3171, doi. 10.1002/rcm.4762
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Degradation of urine samples and its influence on the <sup>13</sup>C/<sup>12</sup>C ratios of excreted steroids.
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- Drug Testing & Analysis, 2010, v. 2, n. 11/12, p. 620, doi. 10.1002/dta.219
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- Article
Reporting and managing elevated testosterone/epitestosterone ratios-Novel aspects after five years' experience.
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- Drug Testing & Analysis, 2010, v. 2, n. 11/12, p. 637, doi. 10.1002/dta.234
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- Article
Determination of <sup>13</sup>C/<sup>12</sup>C ratios of urinary excreted boldenone and its main metabolite 5β-androst-1-en-17β-ol-3-one.
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- Drug Testing & Analysis, 2010, v. 2, n. 5, p. 217, doi. 10.1002/dta.124
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- Article
Determination of <sup>13</sup>C/<sup>12</sup>C ratios of urinary epitestosterone and its main metabolites 5α- and 5β-androstane-3α, 17α-diol.
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- Drug Testing & Analysis, 2009, v. 1, n. 11/12, p. 576, doi. 10.1002/dta.53
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- Article
Determination of the deuterium/hydrogen ratio of endogenous urinary steroids for doping control purposes.
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- Rapid Communications in Mass Spectrometry: RCM, 2009, v. 23, n. 13, p. 1917, doi. 10.1002/rcm.4098
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<sup>13</sup>C/<sup>12</sup>C Ratios of endogenous urinary steroids investigated for doping control purposes.
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- Drug Testing & Analysis, 2009, v. 1, n. 2, p. 65, doi. 10.1002/dta.15
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- Article