ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Analytical procedure for steroid profiling valid for Athlete Biological Passport
Anna Jarek, Katarzyna Kowalczyk, Piotr Chołbiński, Katarzyna Chajewska, Ewa Turek-Lepa, Andrzej Pokrywka, Ewa Bulska, and Dorota Kwiatkowska
Department of Anti-Doping Research, Institute of Sport, Trylogii 2/16, 01-982 Warsaw, Poland
Abstract: Although various attempts have been made to eliminate doping in sport, hitherto they all have proved futile. Moreover, the main class of substances that jeopardises the fair play rule remains the same - anabolic androgenic steroids (AAS). To date, longitudinal monitoring of the fluctuations of the endogenous steroids content for a given athlete is regardeded as the most effective approach to the detection of AAS abuse. This is based on the fact that the activity of the steroid biosynthesis pathway may undergo significant changes in response to the AAS administration. This paper presents the entire analytical procedure for quantification of steroids crucial for the Athlete Biological Passport (ABP): testosterone, epitestosterone, dehydroepiandrosterone, androsterone, etiocholanolone, 5-α-androstandiol and 5-β-androstandiol. The procedure consists of a four-step sample preparation process followed by analysis by gas chromatography coupled with mass spectrometry. The limits of quantification for the substances listed above were; 0.44 ng mL−1, 2.07 ng mL−1, 1.24 ng mL−1, 62.49 ng mL−1, 36.20 ng mL−1, 16.90 ng mL−1 and 14.92 ng mL-1, respectively. Aqueous solutions containing deuterated and non-deuterated steroids were used for calibration purposes. Subsequently, the validation parameters, e.g., precision, accuracy and recovery were evaluated for each substance individually.
Keywords: anabolic androgenic steroids – steroid profiling – GC-MS – doping control – Athlete Biological Passport
Full paper is available at www.springerlink.com.
Chemical Papers 69 (2) 254–261 (2015)