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What is a nuchal translucency scan? What does a nuchal translucency scan look for? How is a nuchal translucency scan performed and when? What happens if my baby is in the high risk category? Do I have to have the test? No, it is your decision. Or you might decide not to have the nuchal translucency scan, or any other tests. Back To Top. BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world.
When creating and updating content, we rely on credible sources: respected health organizations, professional groups of doctors and other experts, and published studies in peer-reviewed journals. We believe you should always know the source of the information you're seeing.
Learn more about our editorial and medical review policies. Prenatal genetic screening tests. American College of Obstetricians and Gynecologists. March of Dimes. Down syndrome. Nuchal translucency test. What tests might I need during pregnancy? Should I have a screening test for Down syndrome during pregnancy?
Join now to personalize. The NT scan is an ultrasound done in the first trimester to determine your baby's risk of having Down syndrome and some other chromosomal abnormalities. It's usually done along with a blood test. If the nuchal translucency test indicates that your baby may have a health condition, you can decide whether to have a diagnostic test to find out for certain.
Photo credit: Thinkstock. What is the nuchal translucency test? How is the nuchal translucency test done? How are NT scan results calculated? What do NT scan results mean? How accurate is the nuchal translucency test? What happens if my NT scan indicates a problem? Sources BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world.
Featured video. Chorionic villus sampling CVS. NIPT Noninvasive prenatal testing. Quad screen second-trimester prenatal screening. What to know about your first prenatal appointment.
Pregnancy Due Date Calculator. When can I hear my baby's heartbeat? New to BabyCenter? The fluid in itself is not an abnormality and does not harm the baby but may simply be the sign of a potential problem. The baby is measured from head to bottom to determine the crown-rump length and the nuchal translucency is measured. The findings are then discussed with the patient. The combined NT result will provide the patient with a risk assessment.
This will either be a high risk risk is greater than 1 in or a low risk risk less than 1 in As this is a screening test and not a diagnostic test, even with a low calculated risk, Down syndrome is not completely excluded and can still occur occasionally. This is best done at 10 weeks, some two weeks prior to the NT scan but it can also be done just before or on the same day as the NT scan.
If a pregnant woman wants to completely exclude a chromosome abnormality, then she should consider having prenatal testing with either a CVS or an amniocentesis. Genetic counselling is also recommended. The results of the examination will be available to you shortly after the examination. One of our genetic counsellors or doctors will be available to discuss the result and the options for further testing.
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