
What does HBsAg negative mean?
When I went for a follow-up examination of hepatitis B this week, the doctor said HBsAg negative. I would like to know, what does HBsAg negative mean?

HBsAg negative indicates a negative result for hepatitis B surface antigen, which means there is no infection with the hepatitis B virus, a normal situation.
Hepatitis B surface antigen (HBsAg) is a component of the hepatitis B virus. Its presence typically indicates current or past infection with hepatitis B virus. If the test result is negative, this is generally good news, suggesting there is no active hepatitis B infection or prior exposure to the virus.
To fully assess hepatitis B status, doctors may recommend further testing for other related antibodies, such as hepatitis B surface antibody (anti-HBs) and hepatitis B core antibody (anti-HBc), to determine immune status or history of past infection. It is advisable to follow medical recommendations and receive hepatitis B vaccination as needed to prevent future infection.