PSO

Coming Soon

Fetal Blood Type Screening

On September 21st, 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!

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.

UPCOMING WEBINAR · Sept. 30 · 12 PM EST

Prenatal Screening for Aneuploidy in Ontario

Updates, Counselling Guidance, and Resources for Care Providers

✓ This Webinar is Accredited for Continuing Education*

DID YOU KNOW?

Preeclampsia

Taking low dose aspirin can lower your risk of developing preterm preeclampsia. 

FEEL CONFIDENT IN YOUR CARE

My Screening Pathway

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

PERFORMANCE DATA

Monitoring Prenatal Screening Performance 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.

FEATURED PUBLICATION

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

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. 

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

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.