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  • What We Screen For In Ontario
    • Trisomy 21 (Down Syndrome)
    • Trisomy 18 (Edwards Syndrome)
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  • Prenatal Screening Options
    • Is Prenatal Screening Right For Me?
    • Less than 14 Weeks' Pregnant
    • 14-21 Weeks' Pregnant
    • More than 21 Weeks' Pregnant
    • Twins and More Than Two Babies
    • Vanishing Twins
  • Results and Next Steps
    • Enhanced First Trimester Screening (eFTS) Results
    • Second Trimester Screening (STS) Results
    • Vanishing Twins Screening Results
    • Non-invasive Prenatal Testing (NIPT) Results
    • 11-14 Week (Nuchal Translucency) Ultrasound Results
    • 18-22 Week Ultrasound Results
    • Diagnostic Testing
  • For Practitioners-How to Order
    • Requisitions
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    • enhanced First Trimester Screening (eFTS) Guide
    • Second Trimester Screening (STS) Guide
    • Screening for Vanishing Twins Guide
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HomeResults and Next StepsDiagnostic Testing
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Diagnostic Testing

Diagnostic testing can give you "yes" or "no" answers about chromosome difference in the pregnancy. This testing is OHIP-funded and can be done through either chorionic villus sampling (CVS) or amniocentesis:

cvs icon

| Chorionic Villus Sampling (CVS)

Done between 11 to 14 weeks of pregnancy

Learn more

 

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| Amniocentesis

Done after 15 weeks of pregnancy

Learn more

  • Results and Next Steps
    • Enhanced First Trimester Screening (eFTS) Results
      Toggle Section Enhanced First Trimester Screening (eFTS) Results Menu
      • Screen Negative Results
      • Screen Positive Results
    • Second Trimester Screening (STS) Results
      Toggle Section Second Trimester Screening (STS) Results Menu
      • Screen Negative Results
      • Screen Positive Results
    • Vanishing Twins Screening Results
      Toggle Section Vanishing Twins Screening Results Menu
      • Screen Negative Results
      • Screen Positive Results
    • Non-invasive Prenatal Testing (NIPT) Results
      Toggle Section Non-invasive Prenatal Testing (NIPT) Results Menu
      • Low risk NIPT Results
      • High risk NIPT Results
      • No NIPT Result
    • 11-14 Week (Nuchal Translucency) Ultrasound Results
    • 18-22 Week Ultrasound Results
    • Diagnostic Testing
      Toggle Section Diagnostic Testing Menu
      • Chorionic villus sampling
      • Amniocentesis

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Prenatal Screening Ontario 
CHEO Research Institute 
Centre for Practice-Changing Research Building 
401 Smyth Road 
Ottawa, ON K1H 8L1

Phone: 613-737-2281>

Toll-Free: 1-833-351-6490

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