Motherisk was a clinical and research program at The Hospital for Sick Children in Toronto, Ontario, Canada, established in 1985 as a teratogen information service to provide evidence-based safety information on exposures in pregnancy and lactation.
Gideon Koren and colleagues for the Motherisk team were recognized as one of the two highest-ranking winners of the 2011 CIHR/CMAJ competition for Top Achievements in Health Research.
[5] An independent review commissioned by the Ontario Ministry of the Attorney General concluded in 2015 that "hair-strand drug and alcohol testing used by the Motherisk Drug Testing Laboratory between 2005 and 2015 was inadequate and unreliable for use in child protection and criminal proceedings and that the Laboratory did not meet internationally recognized forensic standards.
[6] In 2017, an investigation into Gideon Koren was commenced by the College of Physician and Surgeons in Ontario into whether he committed professional misconduct or was incompetent while he was in charge of the Motherisk Laboratory.
As a result, Gideon Koren agreed to relinquish his license to practice medicine in Ontario in 2019.