Understanding Lab Tests for Immunity to Measles
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Measles is a highly contagious viral infection that can be prevented through vaccination. Understanding your immunity status is important for personal health and public safety, especially for healthcare workers, travelers, and those in close contact with vulnerable populations.
Recommended Test
Measles Antibody (IgG)
This test measures IgG antibodies specific to the measles virus in your blood. The presence of these antibodies indicates immunity to measles, which can result from either previous vaccination or having had the disease in the past. A positive result confirms that you have protective immunity against measles infection.
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Why Test for Measles Immunity
Blood testing is the standard method to determine measles immunity. This testing is particularly important if you're unsure about your vaccination history, need proof of immunity for work or school requirements, or want to confirm that your immune system has responded appropriately to vaccination.
Understanding Your Results
A positive result indicates you have immunity to measles, while a negative result suggests you may need vaccination or revaccination. Your healthcare provider can interpret your results and recommend appropriate next steps based on your individual circumstances and risk factors.
Important Considerations
The information here is for educational purposes only and is not a substitute for professional medical advice. Always consult with a healthcare provider for diagnosis and treatment recommendations.
