Dr. Schreiber is the Clinical Director of Chemistry at LifeLabs. In this role, he provides medical oversight for all chemistry testing in British Columbia. Prior to joining LifeLabs, he worked in the Division of Clinical Chemistry at Vancouver General Hospital. He also served as medical director of the Provincial Toxicology Center, which provides both forensic and clinical toxicology services for the entire province.

Since joining the faculty at UBC, he has committed a large part of his career to the education of medical students, residents and colleagues. He directed the medical biochemistry residency program for 10 years and served as associate dean for undergraduate education at UBC from 1999-2002. He has received a number of teaching awards from students and peers, as well as recognition from professional organizations for contributions to continuing medical education. His recently published book, An Introduction to Testing for Drugs of Abuse (Wiley-Blackwell), is available at https://www.wiley.com/en-ca/An+Introduction+to+Testing+for+Drugs+of+Abuse-p-9781119794059.

In 2016-2017, Dr. Schreiber served as president of the American Society for Clinical Pathology (ASCP), the largest pathology organization in North America.