Analytical procedure for steroid profiling valid for Athlete Biological Passport

Autor: Ewa Bulska, Anna Jarek, Piotr Chołbiński, Katarzyna Chajewska, Katarzyna Kowalczyk, Dorota Kwiatkowska, Ewa Turek-Lepa, Andrzej Pokrywka
Rok vydání: 2015
Předmět:
Zdroj: Chemical Papers. 69
ISSN: 1336-9075
DOI: 10.1515/chempap-2015-0030
Popis: 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 ngmL−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.
Databáze: OpenAIRE
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