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My son was recently tested for fragile x syndrome. What is accuracy?

1 doctor weighed in
Dr. Bryan Levey
Pediatrics

In brief: 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.

In brief: 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.
Dr. Bryan Levey
Dr. Bryan Levey
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