Hemophilia B Diagnosis

If you think that you or your child has a bleeding disorder, you should see a healthcare professional for an accurate diagnosis. This will help ensure that you receive treatment and learn the necessary steps to take when a bleeding episode occurs.

What to expect

During the initial visit to your healthcare professional, you will be asked about your medical history and your family’s medical history.

Your healthcare professional will also perform a physical exam and blood tests. These tests are very important in diagnosing hemophilia B. The results can help healthcare professionals determine the following1:

  • How long it takes your blood to clot
  • The levels of clotting factors—including factor IX—in your blood
  • The type and severity of the condition

Once your healthcare professional diagnoses hemophilia B, you can discuss the next steps.


  1. Hemophilia B. National Hemophilia Foundation website. https://www.hemophilia.org/Bleeding-Disorders/Types-of-Bleeding-Disorders/Hemophilia-B. Accessed October 21, 2014.