The test can tell you if you carry a mutated gene and if you're at a higher risk for developing certain types of conditions or diseases. The results may also be important for your children, siblings, parents and other close relatives. It can also help you learn what testing, monitoring, prevention strategies or research trials may be right for your situation. The earlier you know your risk, the faster you can take action to make a difference in your future health. Just as important, these tests can also relieve stress and worry if they reveal you aren't at an increased risk.