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A member asked:
My son was recently tested for fragile x syndrome. what is accuracy?
A doctor has provided 1 answer
Very high: Fragile x is a problem found on the x chromosome, so it is inherited from the mother. Something called karyotyping is often done first, where the chromosomes are looked at under a microscope to see if they look normal. This is usually followed by dna testing that is very accurate. If the dna test is positive, it's positive.
Answered 7/5/2012
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