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In-Depth

Down syndrome

Tests and diagnosis

  • Prenatal testing: Your guide to common tests Prenatal testing — Understand the most common prenatal screening and diagnostic tests.
  • Genetic testing Genetic testing — Overview covers why genetic testing is done, preparation and results.
  • Cordocentesis Cordocentesis — Overview covers definition, risks, results of this prenatal diagnostic test.
  • First trimester screening First trimester screening — Overview covers definition, risks, results of this early prenatal screening test.
  • Quad screen Quad screen — Overview covers definition, risks, results of this second trimester prenatal screening test.
  • Chorionic villus sampling Chorionic villus sampling — Overview covers definition, risks, results of this early prenatal test.

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