Understanding Lab Tests for Hepatitis B Virus Infection
Written by Private MD Labs Medical Writing Team • Last Updated: September 8, 2025
Hepatitis B is a viral infection that affects the liver and can cause both acute and chronic illness. The virus is transmitted through contact with infected blood or other body fluids. Since symptoms can be mild or absent, especially in chronic cases, blood tests are essential for accurate diagnosis and monitoring of Hepatitis B virus infection.
Recommended Test
Hepatitis B Surface Antibody, Qualititative
This test detects antibodies against the Hepatitis B surface antigen in the blood. A positive result indicates immunity to Hepatitis B, which may result from successful vaccination, recovery from a previous acute infection, or the presence of a current chronic infection. This test is crucial for determining protection status and guiding further testing or treatment decisions.
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Why Blood Testing is Essential for Hepatitis B
Blood tests are the primary method for diagnosing Hepatitis B virus infection, determining infection status, and assessing immunity. These tests can distinguish between acute and chronic infections, identify carriers, and confirm whether someone has developed immunity through vaccination or recovery from infection.
Understanding Your Results
Hepatitis B testing can be complex, as different combinations of test results indicate different stages of infection or immunity. A positive Hepatitis B Surface Antibody test generally indicates protection against the virus, but additional testing may be needed to determine the complete infection status and guide appropriate medical management.
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 of Hepatitis B virus infection.
