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Guide

Understanding a Diagnosis of Down Syndrome

From National Down Syndrome Society

A gentle starting point for expectant and new parents: what the tests mean, how a diagnosis is confirmed, and where to find support.

What it covers

  • Explains the difference between a screening test (which estimates chance) and a diagnostic test (which confirms).
  • Describes how a diagnosis is confirmed after birth with a chromosome test called a karyotype.
  • Says it is normal to feel many emotions, and encourages talking with other parents.
  • Points to local parent groups through NDSS’s network of affiliate organizations.
  • Includes simple self-care tips for new parents.
For:
Parents & Families
Life stage:
Prenatal, Early Childhood

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We wrote this summary to help you decide if the resource is right for you. The full content belongs to National Down Syndrome Society. We checked this link in November 2026.