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Congenital antithrombin III deficiency

  • Alternative Names

    Deficiency - antithrombin III - congenital; Antithrombin III deficiency - congenital


    Patients will usually have symptoms of a blood clot, including:

    • Coughing up blood
    • Fainting
    • Shortness of breath and pain when taking deep breaths
    • Swelling of one leg

    Signs and tests

    A physical examination may show:

    • A fast heart rate
    • A swollen foot or ankle

    The diagnosis is made by checking for low levels of antithrombin III in the patient's blood.