Description
Why It’s Done:
This test is performed for various purposes, including:
• Assessing immune function: The test can help evaluate the overall health of the immune system, especially in cases where an individual has a history of frequent infections or immune deficiencies.
• Diagnosing immune disorders: Low or high levels of IgA, IgM, or IgG may indicate immune deficiencies, autoimmune diseases, or chronic infections.
o IgA deficiency: Often linked with recurrent infections, especially in the respiratory and gastrointestinal tracts.
o IgM deficiency: May indicate immunodeficiencies or delayed response to infection.
o IgG abnormalities: Can be associated with chronic infections or autoimmune diseases.
• Monitoring autoimmune diseases: IgG, IgM, and IgA levels can help monitor diseases like rheumatoid arthritis, lupus, or vasculitis.
• Evaluating response to infections or immunization: This test can assess the body’s immune response to a new infection or vaccination (e.g., measles, hepatitis).
• Investigating chronic infections: It is often used to evaluate conditions like HIV, chronic hepatitis, or mononucleosis.
• Evaluating response to therapies: It can help track how well a person is responding to immune-modulating treatments, such as immunoglobulin replacement therapy.
Preparation:
• No special preparation is generally required for this test.
• The test is done using a blood sample typically drawn from a vein in the arm.
• It is important to inform your healthcare provider of any medications you are currently taking, as certain drugs, especially immunosuppressants, steroids, or vaccines, can affect immunoglobulin levels.
• Fasting is not necessary unless otherwise specified by your doctor.
