Diagnosis and Testing
Who else in my family should I test for familial Alzheimer Disease?
If you have a positive test result in a gene that can cause familial Alzheimer Disease, other family members may be at risk to have the same genetic change. First-degree relatives (siblings, children, and parents) may have a 50% chance to have the same genetic change. Second-degree relatives (nieces/nephews, aunts/uncles, grandparents, grandchildren, and half siblings) may have a 25% chance to have the same genetic change. Genetic testing is a personal decision. Not everyone at risk for a genetic condition chooses to have genetic testing. Some people will choose to proceed with the testing and some people will not. Each individual must consent to having genetic testing.