A genetic test might be able to tell you for certain about you or your child’s genetic makeup. For some people this relief from uncertainty is very important, even if the news is bad. If the news is good, such as a mild prognosis, it can mean a tremendous sense of relief.
A genetic test can help diagnose a genetic condition. When someone has an accurate diagnosis, the appropriate treatment can be given, and you have a better chance of finding support. If a genetic test tells you that you have an increased risk of developing a condition later in life (such as breast cancer) you might be able to go for more regular check-ups, or take other measures to keep the risk to a minimum.
The results of a genetic test can provide useful information when planning for future children. If you know you and your partner are at high risk of having a child with a genetic condition, it may be possible to test the unborn child during pregnancy to see if it is affected. Knowing you have an increased risk of having a child with a genetic condition might give you the opportunity to be more mentally and practically prepared.
Because genetic conditions often run in families, information about your genetic makeup might be useful to other family members. If family members are aware that a genetic condition runs in the family, it might prevent them from being misdiagnosed. This information might also be of use to them when they are planning children.