Molecular Genetic Testing: Fragile X

Also known as: molecular diagnostics.

What is molecular genetic testing: fragile X?

Molecular genetic testing refers to a wide variety of tests performed on blood and tissue to screen for genetic disorders. The fragile X test specifically looks for variations in DNA that can predispose people to fragile X syndrome. Fragile X syndrome causes a number of development problems, including cognitive impairment and learning disabilities.

What happens during the procedure?

All that’s required for the test is a basic blood draw, typically from the arm but sometimes from another area of the body. Then the blood sample is taken to a laboratory for testing.

Is any special preparation needed? 

No special preparation is needed for the test.

What are the risk factors?

There are slights risks of infection, bleeding, bruising or swelling related to the blood draw.


Reviewed by: Parul B Jayakar, MD

This page was last updated on: June 21, 2019 01:28 AM

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