Assays for hepatitis B surface antigen (HBsAg) are the most frequently used tests to detect HBV infection. Vaccination for HBV can produce transiently detectable levels of HBsAg in patients.

The promising findings with the approach did have two caveats, however: the durability of HBsAg loss appears to ... 5 times the upper limit of the normal range for at least 6 months before screening.

In a new clinical practice guideline, the AGA provided evidence-based recommendations for either antiviral prophylaxis or continued surveillance to manage hepatitis B virus reactivation in patients ...