Assistant Professor at the Department of Biochemistry and Pharmacogenomics, Medical University of Warsaw. For 20 years (1994-2015), associated with the Institute of Sport in Warsaw (in 1996-2009, he was Deputy Head of the Department of Anti-Doping Research, and in 2009-2015, Director of the Institute). Scientific editor of the book Doping in Sport, published by Wydawnictwo Lekarskie PZWL (2020). Author or co-author of more than 100 scientific publications, mainly on anti-doping issues and laboratory diagnostics used in monitoring the health and training effects of athletes.