Immunoglobulin (IgG) is the part of blood plasma that contains antibodies. People suffering from immunodeficiency diseases involving poor IgG levels and/or function often benefit from a medical treatment called immunoglobulin replacement therapy, also known as IVIg or SCIg
IgG is a blood product derived from blood donors. The IgG is purified from the rest of the blood through a processing system that safely eliminates potential infectious agents.
The IgG can be given through an IV each month, or under the skin, (subcutaneous, SCIg) once a week. Both methods are effective at replacing IgG to levels necessary to fight infections. Each method has pros and cons that should be discussed with your allergist / immunologist.
IgG replacement therapy is generally well tolerated, although side effects such as allergic reactions and headaches can occur.
Learn more about primary immunodeficiency diseases (PIDD) symptoms, diagnosis, treatment and management.
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