The Hepatitis B Immunity (IgG) test, also known as the Hepatitis B surface antibody (anti-HBs) test, is a blood test used to determine if an individual is immune to Hepatitis B virus (HBV) infection. The test is important because it assesses protective immunity against Hepatitis B virus infection following vaccination or natural infection. It guides vaccination strategies, ensures healthcare worker safety, prevents vertical transmission, supports post-exposure management, and monitors immunity status in at-risk populations.
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