Analytical methods for anti-doping control in sport: anabolic steroids with 4,9,11-triene structure in urine

Doping control in sport is mandatory to detect and to control the use of prohibited substances. Due to the growing number of targets, the analysis of doping compounds and their metabolites is carried out using established screening methods. However, detection of anabolic steroids with 4,9,11-triene structure in urine is problematic, so it is necessary to improve the methods.