MYTHS & FACTS… About genetic testing
Dale Halsey Lea RN, APNG, MPH, FAAN

December 2004 
Volume 34  Number 12
Pages 27 - 27
  PDF Version Available!

© 2004 Lippincott Williams & Wilkins, Inc. Volume 34(12)             December 2004             p 27 … About genetic testing [MYTHS & FACTS]

Lea, Dale Halsey RN, APNG, MPH, FAAN

MYTH: All genetic tests are based on DNA .

FACT: Genetic tests that analyze human DNA or RNA are known as direct testing. Other tests analyze chromosomes (cytogenetic testing), markers linked to genes (linkage analysis testing), or certain metabolites (biochemical testing) to detect gene changes related to an inherited condition. For more information about genetic testing, see the GeneTests Web site at .

MYTH: Genetic testing can determine whether all of a person's genes are normal .

FACT: Current genetic testing looks for changes (mutations) in a specific gene, such as the gene mutation that causes cystic fibrosis. Current tests don't examine every single ...

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