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A hepatitis A virus (HAV) antibody blood test is a laboratory test that measures the level of antibodies to the HAV in the blood. Antibodies are proteins produced by the immune system in response to infection or vaccination. The test is used to determine whether a person has been infected with the HAV and has developed immunity to the virus. A positive test result indicates that the person has been infected with the virus and has developed immunity, while a negative result may indicate a need for vaccination or further testing.
This page is provided for educational and informational purposes only and does not constitute the provision of medical advice or professional services. The information provided should not be used for diagnosing or treating a health problem or disease, and those seeking personal medical advice regarding any of the tests and conditions referenced above are advised to consult with a licensed clinician. Always seek the advice of your qualified health provider regarding a medical condition and do not disregard professional medical advice or delay in seeking it because of any information on this page. If you think you may have a medical emergency, immediately call 911 or go to the nearest urgent care center or hospital.
