Hepatitis B Profile :
A set of blood tests used to assess the status of a Hepatitis B virus (HBV) infection. The profile typically includes a combination of tests that measure different markers of the virus and the immune response, including:

1. Hepatitis B Surface Antigen (HBsAg) : Indicates the presence of the Hepatitis B virus in the blood and active infection.
2. Hepatitis B Surface Antibody (Anti-HBs) : Suggests immunity to Hepatitis B, either from previous infection or vaccination.
3. Hepatitis B Core Antibody (Anti-HBc) : Indicates past or current infection with HBV.
4. Hepatitis B Envelope Antigen (HBeAg) : Indicates active viral replication and high infectivity.
5. Hepatitis B Envelope Antibody (Anti-HBe) : Often appears after HBeAg is cleared, suggesting lower viral activity and infectivity.

Together, these tests provide a comprehensive view of whether a person is currently infected, has been exposed to the virus in the past, or is immune to the virus through vaccination. The results also help determine whether antiviral treatment or further monitoring is necessary.