Immunoglobulins

Gamma Globulin Tests

Why It Is Done

A test for immunoglobulins (antibodies) in the blood is done to:

• Find certain autoimmune diseases or allergies.
• Find certain types of cancer (such as multiple myeloma or macroglobulinemia).
• See whether recurring infections are caused by a low level of immunoglobulins (especially IgG).
• Check the treatment for certain types of cancer affecting the bone marrow.
• Check the treatment for Helicobacter pylori (H. pylori) bacteria.
• Check the response to immunizations to see if you are immune to the disease.

This test is often done when the results of a blood protein electrophoresis or total blood protein test are abnormal.

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Author:	Maria G. Essig, MS, ELS	Last Updated: August 19, 2008
Medical Review:	Kathleen Romito, MD - Family Medicine Brian Leber, MDCM, FRCPC - Hematology
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