Immunoglobulins

Gamma Globulin Tests

What Affects the Test

Reasons you may not be able to have the test or why the results may not be helpful include:

• Taking medicines, such as hydralazine, phenylbutazone, birth control pills, anticonvulsants (such as phenytoin), methotrexate, aminophenazone, asparaginase, or corticosteroids.
• Having cancer treatments, both radiation and chemotherapy.
• Receiving a blood transfusion in the past 6 months.
• Getting vaccinations (immunizations), especially vaccinations with repeat (booster) doses, in the past 6 months.
• Using alcohol or illegal drugs.
• Having a radioactive scan in the past 3 days.

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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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