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KEY POINTS
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Nuchal translucency screening is a test that may be done during pregnancy. The test uses ultrasound to take pictures of the baby. It looks at and measures an area of skin and fluid collection on the back of the baby’s neck. This area of the neck is called the nuchal area. The test is used to check the baby’s risk for Down syndrome, heart defects, and other birth defects.
If test results show that your baby does have a problem, your healthcare provider will talk to you about your choices for treatment. The information can help you decide how to manage a pregnancy with a baby affected by the problem.
The test is done between the 11th and 14th weeks of pregnancy.
Your healthcare provider may advise you to have this test if:
You will need to drink a lot of fluids to fill your bladder before the test. Follow your healthcare provider’s instructions.
During the test, an ultrasound sensor is placed on your belly or in your vagina. Your healthcare provider will use the ultrasound pictures to measure the area on the back of the baby’s neck. Your provider may make other measurements as well.
Your healthcare provider will review the test results. If the test finds a possible problem, your provider may recommend an amniocentesis to check the results. When you have amniocentesis, a needle is used to get samples of the fluid around the baby.
Ask your healthcare provider:
Make sure you know when you should come back for a checkup. Keep all appointments for provider visits or tests.
This test has no risks for you or the baby.