Catchment areas for MMS laboratories
Which MMS Requisition Should I Use?
Multiple Marker Screening (MMS) is done by 3 provincial laboratories: Trillium Health Partners - Credit Valley Hospital, Mount Sinai Hospital and North York General Hospital.
Each of the provincial MMS laboratories has a specific catchment area. You can zoom in on our map to learn which MMS laboratory covers your location, and use the corresponding MMS requisition for that laboratory.
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Prenatal Screening Ontario
CHEO Research Institute
Centre for Practice-Changing Research Building
401 Smyth Road
Ottawa, ON K1H 8L1
Information line
Phone: 613-737-2281
Toll-Free: 1-833-351-6490
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