Genetic testing for the INI1 gene is available and can be coordinated for families in which testing would be appropriate. Sometimes genetic testing can involve testing for both the INI1 and NF2 genes. Additionally, it is important to determine whether testing should be conducted using blood or tumor samples, or both.

It is a good idea for anyone with questions about genetic testing and the possible risk of developing schwannomatosis to meet with a genetic counselor who has experience in working with individuals and families who have schwannomtosis to learn more about their individual case and how to arrange for testing that would be most appropriate for them.