Genetic Test

Results

A genetic test examines a DNA (deoxyribonucleic acid) sample of a person's cells for abnormal genes, or analyzes the number, arrangement, and characteristics of the chromosomes.

The results of genetic testing depend on the type of test done. Genetic testing is used to:

  • Diagnose an inherited disease.
  • Provide information about how likely it is that you will develop a disease in the future.
  • Determine whether you are a carrier of the disease.
  • Provide information about the severity of an inherited disease.

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Author: Douglas Dana
Maria G. Essig, MS, ELS
Last Updated: July 10, 2007
Medical Review: Joy Melnikow, MD, MPH - Family Medicine
Anne C. Poinier, MD - Internal Medicine
Renee H. Martin, PhD - Medical Genetics

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Topic Contents
 Test Overview
 Why It Is Done
 How To Prepare
 How It Is Done
 How It Feels
 Risks
Arrow PointerResults
 What Affects the Test
 What To Think About
 References
 Credits