After graduating from the University of Zurich, Renold was awarded a scholarship from the American-Swiss Foundation for Scientific Exchange, allowing him to move to
Boston in 1948 as a research fellow at
New England Deaconess Hospital,
Peter Bent Brigham Hospital, and
Harvard Medical School. He was appointed director of Harvard Medical School's Carbohydrate Research Laboratory in 1956 and director of New England Deaconess Hospital's Baker Clinic Research Laboratory in 1959; under his leadership the latter became internationally known for diabetes research. He also founded the Institute of Clinical Biochemistry in Geneva, where he hosted a variety of research fellows and visiting professors, largely focusing on diabetes research. ==Death==