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Down syndrome

In-Depth

  • Tests and diagnosis

  • First trimester screening First trimester screening — Overview covers definition, risks, results of this new prenatal screening test.
  • Quad screen Quad screen — Overview covers definition, risks, results of this common prenatal screening test.
  • Percutaneous umbilical blood sampling Percutaneous umbilical blood sampling — Overview covers definition, risks, results of this prenatal diagnostic test.
  • Chorionic villus sampling Chorionic villus sampling — Overview covers definition, risks, results of this early prenatal test.
  • Genetic testing Genetic testing — Overview covers why genetic testing is done, preparation and results.

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