How is CVS testing different from amniocentesis?

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Both CVS testing and amniocentesis are performed at different points during the pregnancy. CVS DNA testing happens earlier than amniocentesis. Typically, a CVS is done at 10 to 13 weeks while amniocentesis is performed after 15 weeks of pregnancy. Moreover, there is some difference in what they test for; amniocentesis can test for defects of the neural tube and spina bifida. CVS can detect Down syndrome, Cystic fibrosis, Sickle cell disease, Tay-Sachs disease, and Trisomy 18.

When is CVS testing performed?

You undergo CVS testing when you are 10 to 13 weeks pregnant.

Who needs CVS testing?

Your healthcare provider will offer this option if you have certain risk factors, abnormalities detected on early screening tests. CVS test can detect genetic conditions during early pregnancy; you can also skip this test. It’s your own decision

Providers usually offer CVS testing if you:

  • Have a child with a known genetic condition
  • Have an age of 35 or older on your due date
  • Had a previous screening that indicated a higher risk of having a child with a genetic condition
  • Have a family history of a genetic condition, or your partner does

The results of CVS testing can help you in making important decisions for yourself and your baby. If you are at high risk of having a baby with a genetic disorder, talk to your doctor. He/she will help you in deciding if CVS testing is right for you.





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