Diagnosis
If your child has a history of bleeding—especially joint bleeding—or excessive bruising,
your doctor may suspect a bleeding disorder. Simple blood tests are the standard
for diagnosing a child with hemophilia. The tests will check the level of factor
VIII and factor IX in the child’s blood. If the tests show an insufficient amount
of factor VIII, the diagnosis will be hemophilia A, the most common type of hemophilia.
An insufficient amount of factor IX means a diagnosis of hemophilia B. Depending
on how low the levels of factor VIII or factor IX, the child’s hemophilia will be
classified as mild, moderate, or severe.
Learn about treatment options for hemophilia.