Understanding Your Results

Early diagnosis allows early intervention and treatment

Find out if you are at risk - get tested

Test Type Testing Time Fee

All orders received before 3pm PST / 6pm EST are shipped out the same business day. All orders received after 3pm PST / 6pm EST or on weekends or holidays are shipped out the following business day. 24/7 online status check and account management available for all tests.

The Fragile X Syndrome DNA test determines how many of the CGG repeats are present in the FMR1 gene.

Possible results:

  • 5 – 44 repeats. This individual is normal.
  • 45 – 54 repeats. This individual carries the intermediate allele, which does not cause fragile X syndrome.
  • 55 – 200 repeats. This individual carries the premutation allele. The premutation allele is not associated with fragile X syndrome. However, these individuals are at increased risk for tremor ataxia syndrome and infertility issues. Women in this range are considered at risk of having a child affected with fragile X syndrome.
  • >200 repeats. This individual carries the full mutation. The full mutation allele causes fragile X syndrome.

Next, Getting the Fragile X Syndrome DNA Test »