Diagnosis

Haemophilia can be diagnosed before, during or after birth if there's a family history of the condition. Several options are available to parents. If there's no family history of haemophilia, it's usually only diagnosed when a child begins to walk or crawl. They may experience joint bleeds or easy bruising. Mild haemophilia may only be discovered later, usually after an injury or a dental or surgical procedure. Tests before pregnancy Genetic testing and counselling are available to help determine the risk of passing the condition onto a child. This may involve testing a sample of your tissue or blood to look for signs of the genetic mutation that causes haemophilia. Tests during pregnancy If you become pregnant and have a history of haemophilia in your family, tests for the haemophilia gene can be carried out. These include: chorionic villus sampling (CVS) a small sample of the placenta is removed from the womb and tested for the haemophilia gene, usually during weeks 11-14 of pregnancy amniocentesis a sample of amniotic fluid is taken for testing, usually during weeks 15-20 of pregnancy There's a small risk of these procedures causing problems such as miscarriage or premature labour , so you may want to discuss this with the doctor in charge of your care. Tests after birth If haemophilia is suspected after your child has been born, a blood test can usually confirm the diagnosis. Blood from the umbilical cord can be tested at birth if there's a family history of haemophilia. A blood test will also be able to identify whether your child has haemophilia A or B, and how severe it is.
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