PSO

Welcome to

Prenatal Screening Ontario

We are Ontario's resource for pregnant individuals, families and health-care professionals looking for information and updates related to prenatal screening.

Coming Soon

Fetal Blood Type Screening

In spring 2026, we’re launching new tests that can predict fetal blood type. Don’t miss out — be among the first to learn about these new tests!

Learn More

FEEL CONFIDENT IN YOUR CARE

My Screening Pathway

A platform to help pregnant individuals learn about their screening options and make informed decisions.

Learn More

Requisitions

NIPT Ordering

Positive eFTS Results

How to Get eFTS

Nuchal Translucency Quality Assurance

NT Ultrasound Locations

PSO Infoline

Our genetic counsellors and screening specialists are on-call Monday to Friday from 9:00 am - 3:00 pm EST to answer your questions about prenatal screening. Please note that prenatal screening tests have to be ordered through a health-care provider, and we cannot organize this testing.

PERFORMANCE DATA

High Quality Screening in Ontario

Data from Ontario pregnancies are collected and analyzed on a regular basis to look at the utilization and performance of prenatal genetic screening tests.

Performance and Utilization of Prenatal Screening Tests

FEATURED PUBLICATION

Outcomes of pregnancies with varying levels of nuchal translucency measurements: A population-based retrospective study in Ontario, Canada.

Learn More

FOR PATIENTS

My Screening Pathway

A resource for people who are pregnant or planning a pregnancy to learn more about prenatal screening and find out which screening options are right for them. 

Learn More

FEATURED NEWS

Preeclampsia Prevention in Ontario — Can we do better?

Preeclampsia is a common and dangerous complication of pregnancy that causes high blood pressure and excess protein in urine

Learn More

News

Publications

Outcomes of pregnancies with varying levels of nuchal translucency measurements: A population-based retrospective study in Ontario, Canada.

Acta Obstet Gynecol Scand. 2024 doi: 10.1111/aogs.14965. 

Ultrasonographic Fetal Nuchal Translucency Measurements and Cytogenetic Outcomes.

JAMA 7(3):e243689 doi:10.1001/jamanetworkopen.2024.3689.

Subscribe to PSO Updates

Subscribe to stay informed about the latest PSO news and prenatal screening updates in Ontario.
Virtual educational sessions on prenatal screening and nuchal translucency quality assurance are available upon request for health‑care providers.

Subscribe