CVS (Chorionic Villi Sampling)
CVS is a prenatal test that helps you learn if a fetus has health problems. The test is most often done between weeks 9 and 11 of pregnancy. Discuss with your doctor whether CVS is right for you.
Should You Have CVS?
If the fetus has a higher than normal chance of birth defects or other problems, you may want to have this test. The following risk factors can increase chances of fetal health problems:
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You’re 35 or older.
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There’s a history of inherited (genetic) problems in your family.
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Other tests have shown that the fetus may have health problems.
How Is CVS Done?
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First, the fetus is located with ultrasound (sound waves that make an image on a screen).
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A thin tube is then inserted into your vagina and guided to your uterus. Or, you may have a thin hollow needle inserted through your belly.
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A small amount of cells from the tissue that will become the placenta (chorionic villi) are removed by gentle suction.
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You can go home right after the test. But you may need to take it easy for a day or so.
When to Call Your Doctor
Call your doctor right away if you notice:
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Severe pain or cramping
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Vaginal bleeding (spotting)
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Fever or chills
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Fluid leaking from your vagina
Getting Test Results
You’ll learn your CVS results in
