M.K. Parr1), G. Fußhöller1), M. Gütschow2), C. Hess1,2), W. Schänzer1) GC-MS(/MS) investigations on long-term metabolites of 17-methyl steroids 1) Institute of Biochemistry, German Sport University, Cologne, Germany 2) Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, Germany…