Why It Is Done
A genetic test is done to:
- Determine if people who have a Reference family history Opens New Window Reference Opens New Window of a specific disease are likely to pass that disease on to their children (carrier identification). Information obtained from this type of testing can help guide a couple as they make decisions regarding pregnancy.
- Determine if a Reference fetus Opens New Window has a disorder such as Reference Down syndrome Opens New Window (prenatal testing). Information obtained from this type of testing can help guide a couple as they make decisions regarding pregnancy.
- Check for various metabolic diseases, such as Reference phenylketonuria (PKU) Opens New Window (newborn screening). Information obtained from newborn screening can help guide medical treatment to ensure the best possible outcome for the baby.
- Determine if you carry a genetic change that increases your risk for developing a disease, such as breast cancer or Reference Huntington's disease Opens New Window, later in life (late-onset disease testing). This might be important to you if you have a parent or other relative diagnosed with the disease. Information obtained from this type of testing can help you make decisions about disease prevention or future childbearing.
- Check for genetic changes that may affect your treatment for diseases such as Reference HIV Opens New Window or some cancers.
- Check for a genetic change that may affect how a medicine, such as Reference clopidogrel, will work.
|By:||Reference Healthwise Staff||Last Revised: Reference March 29, 2011|
|Medical Review:||Reference Sarah Marshall, MD - Family Medicine
Reference Siobhan M. Dolan, MD, MPH - Reproductive Genetics