For more information about TTISS-ON, contact:

Joanne Duncan, MSc, CCRP, HRM
TTISS-ON Coordinator
905-525-9140 ext. 22934



Nancy Heddle, Professor, MSc FSCML (D)
Director of TTISS-ON
Professor McMaster University



Melanie St. John
TTISS-ON Program Assistant
905-525-9140 ext. 21645

Mailing Address:
McMaster University, Faculty of Health Sciences
Department of Medicine
1280 Main Street West
Health Science Centre – 3H50
Hamilton, Ontario L8S 4K1

TTISS-ON Coordinating Centre

For the past 13 years, McMaster University, McMaster Centre for Transfusion Research (MCTR), located in the Health Science Centre, directed by Dr. Donald Arnold, has been the provincial coordinating center for TTISS-ON for the collection and reporting of Adverse Transfusion Events in Ontario under the direction of Professor Nancy Heddle.

McMaster University continues to be contracted by the Blood Programs Coordinating Office (BPCO) of the Province of Ontario to support and coordinate the TTISS program, in conjunction with the Public Health Agency of Canada (PHAC). The Province of Ontario will continue to develop the provincial program in accordance with the objectives in the agreement between the Province of Ontario and the PHAC.


TTISS-ON Hospital Transfusion Medicine Laboratory Staff Involvement

TTISS-ON would like to acknowledge the role of committed healthcare professionals responsible for reporting these adverse transfusion events. Thank you for recognizing the importance of the program and contributing your time and effort to support TTISS-ON and it’s initiatives.