Triple X Syndrome

It’s quite common to remain undiagnosed, especially if you don’t exhibit medical or developmental issues. If your healthcare provider suspects that you (or your child) have trisomy X syndrome, they may order genetic testing. These tests might be called karyotype or chromosome microarray.

Some people discover that they have triple X syndrome as part of testing for fertility.

If you’re pregnant, your healthcare provider may recommend prenatal genetic testing if you’re at higher risk for having a child with triple X syndrome — either because you’re older than 35 or have triple X syndrome yourself. These include tests such as noninvasive prenatal testing (NIPT), amniocentesis or chorionic villi sampling (CVS). It’s also possible that you’ll have these prenatal tests to look for some other information about the fetus and find out about triple X syndrome at that time. Even if prenatal testing suggests triple X syndrome, it’s still important to get genetic testing after the baby is born to confirm the diagnosis.