Urinary marker of oral pregnenolone administration

@article{Saudan2005UrinaryMO,
  title={Urinary marker of oral pregnenolone administration},
  author={Christophe M. Saudan and Aur{\'e}lien Desmarchelier and Pierre-Edouard Sottas and Patrice Mangin and Martial Saugy},
  journal={Steroids},
  year={2005},
  volume={70},
  pages={179-183}
}

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

Due to its properties to disguise the misuse of anabolic steroids by influencing the ¹³C/¹²C ratio of PD, PREG should be considered to be added to the World Anti-Doping Agency (WADA) list of prohibited substances as a masking agent.

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Carbon isotope ratio analysis of endogenous glucocorticoid urinary metabolites after cortisone acetate and adrenosterone administration for doping control.

This study reaffirms that CIR methods for the doping control of endogenous steroids should not rely upon a single ERC, as the administration of an appropriate precursor to that ERC could cause complications during analysis.

Carbon isotope ratio mass spectrometry for detection of endogenous steroid use: a testing strategy.

Isotope ratio mass spectrometry (IRMS) testing is performed to determine if an atypical steroid profile is due to administration of an endogenous steroid. Androsterone (Andro) and etiocholanolone

A simplified and accurate method for the analysis of urinary metabolites of testosterone-related steroids using gas chromatography/combustion/isotope ratio mass spectrometry.

These carefully controlled analytical conditions are compatible with routine operations, affording accurate and precise results for the more diagnostically relevant metabolites such as testosterone itself and the 5α- and 5β-androstanediols.

Testosterone and doping control

An overview of the use of anabolic-androgenic steroids in sport and methods used in anti-doping laboratories for their detection in urine, with special emphasis on doping with testosterone, is given.

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