Triple X syndrome – Diagnosis and treatment – Mayo Clinic

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 …

https://www.mayoclinic.org/diseases-conditions/triple-x-syndrome/diagnosis-treatment/drc-20350981