Michael Oellerich, MD, HonMD, FAACC, FAMM, FFPath (RCPI), FRCPath, is a chemical pathologist and currently a Distinguished Research Professor at the Department of Clinical Pharmacology, Medical Faculty (UMG) of the George-August University, Göttingen, Germany. He was Chairman of the Department of Clinical Chemistry/Central Laboratory at UMG (1991-2012), Dean of the Faculty of Medicine and served as President of national and international professional organizations (IATDMCT, DGLM, DGKL, WASPaLM). He was Editor-in-Chief of Therapeutic Drug Monitoring (2003-2018) and currently is Associate Editor of this journal. His current research interests are in the field of therapeutic drug monitoring (e.g. cfDNA in cancer and donor-derived cell-free DNA in transplantation). He has authored more than 500 publications and has received various awards (e.g. IATDMCT Charles Pippenger Award, WASPaLM Medal of Honor, WASPaLM Gold-Headed Cane, F. McCreary Prize for Interprofessional Teamwork, Genome Canada Transplant Consortium, University of British Columbia).