Catchment laboratories are based on the referring institution’s location. The catchment areas assigned to each GSO laboratory can be found below.

If you cannot find your institution’s designated catchment laboratory or have questions about where to send your patient’s specimen to, please contact gso@cheo.on.ca or 613-737-7600 ext. 3796.

SickKids CHEO
SickKids Genome Diagnostics Laboratory
555 University Avenue
Room 3416, Roy C. Hill Wing
Toronto, ON, M5G 1X8
Phone: (416) 813-7200 ext. 1
Fax: (416) 813-7732

For laboratory inquiries, contact:
gso.requests@sickkids.ca

 CHEO Genetics Diagnostic Laboratory
401 Smyth Road
Rm w3403
Ottawa, ON, K1H 8L1
Phone: 613-737-7600 ext. 3796
Fax: 613-738-4814

For laboratory inquiries, contact:
gso@cheo.on.ca

GSO Catchment Areas

A map of Ontario depicting the GSO catchment areas. Genetics sites located in the Kitchener-Waterloo, Hamilton, Peel, Toronto, or York region should send their patient specimens to SickKids. Genetics sites located in Durham, Kingston, London, Ottawa, Peterborough, Windsor, or in Northern Ontario should send their patient specimens to CHEO

Documents and images found on the GSO website can be requested in alternative forms such as plain language or accessible electronic format as part of our commitment to Accessibility. To request information in an alternative format please email gso@cheo.on.ca or call 613-737-7600 ext. 3796

Find your GSO laboratory by institution name:

Genetics Sites Send specimen(s) to:
Centenary Hospital – Scarborough Health Network SickKids
CHEO CHEO
Credit Valley Hospital – Trillium Health Partners SickKids
Genetics Sites Send specimen(s) to:
Hamilton Health Sciences SickKids
Health Sciences North CHEO
Genetics Sites Send specimen(s) to:
Kingston General Hospital CHEO
Genetics Sites Send specimen(s) to:
Lakeridge Health CHEO
London Health Sciences CHEO
Genetics Sites Send specimen(s) to:
Mackenzie Health SickKids
McMaster University Health Centre and Children’s Hospital SickKids
Michael Garron Hospital SickKids
Mount Sinai Hospital SickKids
Genetics Sites Send specimen(s) to:
North York General Hospital SickKids
Genetics Sites Send specimen(s) to
Orillia Soldier’s Memorial Hospital CHEO
Genetics Sites Send specimen(s) to:
Peterborough Regional Health Centre CHEO
Porcupine Health Unit CHEO
Genetics Sites Send specimen(s) to:
Scarborough Health Network – Centenary Hospital SickKids
SickKids SickKids
Genetics Sites Send specimen(s) to:
Thunder Bay Regional Health Sciences Centre CHEO
Trillium Health Partners – Credit Valley Hospital SickKids
Genetics Sites Send specimen(s) to:
University Health Network (UHN) SickKids
Genetics Sites Send specimen(s) to:
Winnipeg Health Sciences Centre CHEO