Despite the restrictions on DTC testing is useful in three main ways. To begin with, consumers who find that they are at increased risk. And efforts to prevent the possibility of having one. Also, the help of a knowledgeable physician or genetic counselor about the risk of carrying a genetic condition that can be useful for those considering pregnancy. Finally, know that you may have a higher than average risk of developing certain types of cancer and help you create a plan to prevent doctors and others. Of cancer Is the key to effective treatment.