Huntington disease genetic test

The Huntington genetic test is a blood test to check for the genetic disease. If you have a family member who has Huntington disease, their blood usually is tested first to identify the changed gene that might run in your family. Then you give a blood sample, which is screened for the gene change. Testing another family member also may be important in case your family's DNA is unusual in some way that might affect the test result.

Although the Huntington genetic test is highly reliable, no test is 100% accurate. Also, if you test positive, the test can't tell you when you will develop Huntington disease or how quickly the disease will advance.