Hemophilia

A healthcare provider will start by doing a complete history and physical examination. If you have hemophilia symptoms, the provider will ask about your family’s medical history. Providers may do the following tests:

• Complete blood count (CBC): Providers use this test to measure and study blood cells.
• Prothrombin time (PT) test: Providers use this test to see how quickly your blood clots.
• Activated partial thromboplastin time test: This is another blood test to time blood clot formation.
• Specific clotting factor test(s): This blood test show levels of specific clotting factor levels (such as factor 8 and factor 9).

What are clotting factor levels?

Clotting factors help control bleeding. Healthcare providers categorize hemophilia as being mild, moderate or severe based on the amount of clotting factors in your blood:

• People who have 5% to 30% of the normal amount of clotting factors in their blood have mild hemophilia.
• People with 1% to 5% of the normal level of clotting factors have moderate hemophilia.
• People with less than 1% of the normal clotting factors have severe hemophilia.