Diagnosis

Because many girls and women with triple X syndrome are healthy and show no outward signs of the condition, they may remain undiagnosed all their lives, or the diagnosis may be discovered while checking other issues. Triple X syndrome may also be discovered during prenatal testing to identify other genetic disorders.

If triple X syndrome is suspected based on signs and symptoms, it can be confirmed by genetic testing — chromosome analysis using a blood sample. In addition to genetic testing, genetic counseling can help you gain comprehensive information about triple X syndrome.