Non-Invasive Prenatal Testing (NIPT) Guide
Non-Invasive Prenatal Testing (NIPT) is a prenatal genetic screening test consisting of blood work after 9 or 10 weeks gestation. This test is offered to individuals as either an OHIP-funded or private-pay test depending on the situation.
NIPT does not routinely come with an ultrasound. If a pregnant individual decides to have NIPT from the start, they do not need another screening test (such as eFTS). A 11-14 week (nuchal translucency) ultrasound on its own is recommended to get more information about the health of the baby.
Step-by-step instructions are outlined below, to provide guidance to health-care providers for how to order this test in Ontario.
Step 1
Determine if Pregnant Individual is Eligible for OHIP-funded NIPT
- NIPT should be offered to all pregnant individuals prior to initiating prenatal genetic screening along with other available options.
- The funding for NIPT varies and will depend on the reason for testing.
- If individuals do not meet any of the criteria for OHIP-funded NIPT, they can choose private-pay NIPT.
Step 2
Determine the Appropriate NIPT Lab for Pregnant Individual
Select OHIP-funded NIPT or private-pay NIPT to learn about available options.
OHIP-Funded NIPT | ||||||||||||||||||||||||||||||||||||||||||||||||||||
1 - Twin pregnancies generally cannot be screened for sex chromosome aneuploidies. However, PanoramaTM can screen for sex chromosome aneuploidies in monozygotic twin pregnancies only. 2 - "Vanishing" twin pregnancy is a pregnancy that started as a twin pregnancy with subsequent loss of fetal heart activity or loss of the embryo in one of the pregnancy sacs.
1 - Chorionicity, rather than zygosity, has an impact on the outcome of twin pregnancies. Zygosity testing can complement, but not replace, ultrasound evaluation of chorionicity in some clinical scenarios. For example, evaluating zygosity through NIPT may impact pregnancy surveillance when chronicity assignment is uncertain, and can help interpret “high risk” aneuploidy results. |
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Private-Pay NIPT | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Private-pay NIPT is available through the Ontario-based laboratories (LifeLabs or Dynacare), as well as through other laboratories based outside of Canada. Prenatal Screening Ontario is unable to endorse any specific private-pay test or laboratory. We encourage you to read about what factors you and the pregnant individuals in your care may choose to consider.
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Step 3
Provide the Completed NIPT Requisition to Pregnant Individual
Please note that Dynacare and LifeLabs have separate requisitions for private-pay NIPT, and these can be found on their websites.
Step 5
Communicate Results and Next Steps
- Results will be reported to you by the lab generally within 7-10 business days.
- Communicate results back to the pregnant individual once report is received.
- Ensure continuity of care: forward the report to any other providers involved in the care of the pregnant individual.