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Newborn Screening Ontario
Screening Results

By the Numbers

The picture below shows the approximate number of babies born in Ontario each year who have a "positive" result from their blood spot screening and the number of these babies who end up being diagnosed with one of the diseases screened. 

Additionally, about 300 babies will screen positive for Critical Congenital Heart Disease (CCHD) and about 50-100 will end up being diagnosed with CCHD.

Please hover over the three boxes at the bottom of the picture below to see how common each of these results is.
 
25+
diseases tested by Newborn Screening Ontario
~140,000

babies born in Ontario each year

~139,000

babies screen negative
(low risk)

~800

babies screen positive
(high risk)

~200

babies are true positives
(have one of the diseases)

Related

Sickle Cell Carrier Results

Reasons for and against learning your child's carrier status for Sickle Cell Disease.

Screening FAQ

Answers to common questions about the newborn screening process.

Screen Positive Results

Hearing Loss Risk Factor Screening ResultsA "positive" newborn screening result means that a baby has a higher chance to have the disease and more testing is needed to find out for sure.

Repeat Tests

Some babies need to have their newborn screening repeated. Here's why.