Description
Why It’s Done:
The Mycobacteria IgG test is performed for several reasons, including:
• Detect past or resolved infections: High IgG levels may indicate a previous exposure to mycobacterial infections, including tuberculosis or non-tuberculous mycobacteria.
• Diagnose latent tuberculosis (TB): The test can help in identifying individuals who have had TB but no longer show active symptoms.
• Monitor immune response: In individuals with chronic or recurring infections, the IgG test can help track the body’s immune response over time.
• Support diagnosis in suspected non-tuberculous mycobacterial infections that may not present typical symptoms but still cause chronic health issues.
Preparation:
• No fasting or special preparation is required for this test.
• A blood sample is drawn from a vein, usually in the arm.
• Inform your healthcare provider about any recent infections, vaccinations, or antibiotic treatments you may have had, as these could influence the results.
• This test is typically performed alongside other diagnostic tools, such as AFB staining, culture, or PCR testing, to confirm an active infection or assess the immune response


