1: Barnard L, Nikolaou N, Louw C, Schiffer L, Gibson H, Gilligan LC, Gangitano E, Snoep J, Arlt W, Tomlinson JW, Storbeck KH. The A-ring reduction of 11-ketotestosterone is efficiently catalysed by AKR1D1 and SRD5A2 but not SRD5A1. J Steroid Biochem Mol Biol. 2020 Sep;202:105724. doi: 10.1016/j.jsbmb.2020.105724. Epub 2020 Jul 3. PMID: 32629108.
2: Putz M, Piper T, Dubois M, Delahaut P, Thevis M. Analysis of endogenous steroids in urine by means of multi-immunoaffinity chromatography and isotope ratio mass spectrometry for sports drug testing. Anal Bioanal Chem. 2019 Nov;411(28):7563-7571. doi: 10.1007/s00216-019-02169-3. Epub 2019 Nov 15. PMID: 31641821.
3: Pérez JM, Molina L, Ureña-Gutiérrez B, Espinosa J, López-Montoya AJ, Boos M, Granados JE, Cano-Manuel FJ, Azorit C. Individual stress responses to Sarcoptes scabiei infestation in Iberian ibex, Capra pyrenaica. Gen Comp Endocrinol. 2019 Sep 15;281:1-6. doi: 10.1016/j.ygcen.2019.05.007. Epub 2019 May 13. PMID: 31095943.
4: Ruiz MB, Eguizábal GV, Villarreal DP, Busso JM, López AG. Inhibitory action of thymol on fecal microbial activity in Tamandua tetradactyla and its effect on glucocorticoid metabolite measurement. Gen Comp Endocrinol. 2019 Sep 1;280:91-96. doi: 10.1016/j.ygcen.2019.04.015. Epub 2019 Apr 16. PMID: 31002827.
5: de la Torre X, Jardines D, Curcio D, Colamonici C, Botrè F. Isotope ratio mass spectrometry in antidoping analysis: The use of endogenous reference compounds. Rapid Commun Mass Spectrom. 2019 Mar 30;33(6):579-586. doi: 10.1002/rcm.8377. PMID: 30589473.
6: Molina-García L, Pérez JM, Sarasa M, Ureña-Gutiérrez B, Espinosa J, Azorit C. HPLC-QTOF method for quantifying 11-ketoetiocholanolone, a cortisol metabolite, in ruminants' feces: Optimization and validation. Ecol Evol. 2018 Aug 1;8(18):9218-9228. doi: 10.1002/ece3.4285. PMID: 30377495; PMCID: PMC6194299.
7: Jeanneret F, Tonoli D, Hochstrasser D, Saurat JH, Sorg O, Boccard J, Rudaz S. Evaluation and identification of dioxin exposure biomarkers in human urine by high-resolution metabolomics, multivariate analysis and in vitro synthesis. Toxicol Lett. 2016 Jan 5;240(1):22-31. doi: 10.1016/j.toxlet.2015.10.004. Epub 2015 Oct 22. PMID: 26474838.
8: Silva AC, Ebrahimi-Najafadabi H, McGinitie TM, Casilli A, Pereira HM, Aquino Neto FR, Harynuk JJ. Thermodynamic-based retention time predictions of endogenous steroids in comprehensive two-dimensional gas chromatography. Anal Bioanal Chem. 2015 May;407(14):4091-9. doi: 10.1007/s00216-015-8627-0. Epub 2015 Apr 7. PMID: 25845527.
9: Piper T, Thomas A, Thevis M, Saugy M. Investigations on hydrogen isotope ratios of endogenous urinary steroids: reference-population-based thresholds and proof-of-concept. Drug Test Anal. 2012 Sep;4(9):717-27. doi: 10.1002/dta.1416. Epub 2012 Sep 19. PMID: 22991188.
10: Brailsford AD, Gavrilović I, Ansell RJ, Cowan DA, Kicman AT. Two-dimensional gas chromatography with heart-cutting for isotope ratio mass spectrometry analysis of steroids in doping control. Drug Test Anal. 2012 Dec;4(12):962-9. doi: 10.1002/dta.1379. Epub 2012 Jul 3. PMID: 22761127.
11: Ganswindt A, Muilwijk C, Engelkes M, Muenscher S, Bertschinger H, Paris M, Palme R, Cameron EZ, Bennett NC, Dalerum F. Validation of noninvasive monitoring of adrenocortical endocrine activity in ground-feeding aardwolves (Proteles cristata): exemplifying the influence of consumption of inorganic material for fecal steroid analysis. Physiol Biochem Zool. 2012 Mar-Apr;85(2):194-9. doi: 10.1086/664591. Epub 2012 Feb 1. PMID: 22418711.
12: Tobias HJ, Zhang Y, Auchus RJ, Brenna JT. Detection of synthetic testosterone use by novel comprehensive two-dimensional gas chromatography combustion-isotope ratio mass spectrometry. Anal Chem. 2011 Sep 15;83(18):7158-65. doi: 10.1021/ac2015849. Epub 2011 Aug 16. PMID: 21846122; PMCID: PMC3176586.
13: Laframboise AJ, Zielinski BS. Responses of round goby (Neogobius melanostomus) olfactory epithelium to steroids released by reproductive males. J Comp Physiol A Neuroethol Sens Neural Behav Physiol. 2011 Oct;197(10):999-1008. doi: 10.1007/s00359-011-0662-5. Epub 2011 Jul 7. PMID: 21735225.
14: Munton E, Murby J, Hibbert DB, Santamaria-Fernandez R. Systematic comparison of δ13C measurements of testosterone and derivative steroids in a freeze-dried urine candidate reference material for sports drug testing by gas chromatography/combustion/isotope ratio mass spectrometry and uncertainty evaluation using four different metrological approaches. Rapid Commun Mass Spectrom. 2011 Jun 15;25(11):1641-51. doi: 10.1002/rcm.4983. PMID: 21594940.
15: Laframboise AJ, Katare Y, Scott AP, Zielinski BS. The effect of elevated steroids released by reproductive male round gobies, Neogobius melanostomus, on olfactory responses in females. J Chem Ecol. 2011 Mar;37(3):260-2. doi: 10.1007/s10886-011-9923-6. Epub 2011 Mar 2. PMID: 21365215.
16: Katare YK, Scott AP, Laframboise AJ, Li W, Alyasha'e Z, Caputo CB, Loeb SJ, Zielinski B. Release of free and conjugated forms of the putative pheromonal steroid 11-oxo-etiocholanolone by reproductively mature male round goby (Neogobius melanostomus Pallas, 1814). Biol Reprod. 2011 Feb;84(2):288-98. doi: 10.1095/biolreprod.110.086546. Epub 2010 Oct 13. PMID: 20944082.
17: Flauger B, Krueger K, Gerhards H, Möstl E. Simplified method to measure glucocorticoid metabolites in faeces of horses. Vet Res Commun. 2010 Feb;34(2):185-95. doi: 10.1007/s11259-010-9344-y. Epub 2010 Feb 25. PMID: 20182914.
18: Buisson C, Mongongu C, Frelat C, Jean-Baptiste M, de Ceaurriz J. Isotope ratio mass spectrometry analysis of the oxidation products of the main and minor metabolites of hydrocortisone and cortisone for antidoping controls. Steroids. 2009 Mar;74(3):393-7. doi: 10.1016/j.steroids.2008.11.001. Epub 2008 Nov 13. PMID: 19056411.
19: Zhang Y, Tobias HJ, Brenna JT. Steroid isotopic standards for gas chromatography-combustion isotope ratio mass spectrometry (GCC-IRMS). Steroids. 2009 Mar;74(3):369-78. doi: 10.1016/j.steroids.2008.10.001. Epub 2008 Oct 17. PMID: 18992268.
20: Nováková M, Palme R, Kutalová H, Janský L, Frynta D. The effects of sex, age and commensal way of life on levels of fecal glucocorticoid metabolites in spiny mice (Acomys cahirinus). Physiol Behav. 2008 Sep 3;95(1-2):187-93. doi: 10.1016/j.physbeh.2008.05.017. Epub 2008 Jun 3. PMID: 18586285.