Tests and diagnosis

By Mayo Clinic Staff

For people with a family history of hemophilia, it's possible to test the fetus during pregnancy to determine if it is affected by the disease. However, such testing poses some risk to the fetus. Discuss the benefits and risks of testing with your doctor.

Analysis of a blood sample from either a child or an adult can show a deficiency of a clotting factor. Sometimes mild hemophilia isn't diagnosed until after a person has undergone surgery and excessive bleeding results.

Aug. 31, 2011