lab tests for HBV ?

I was tested HBV positive last year and went through a complete blood test and ultra-sound. I was told that my
1 AST, ALT was normal,
2. HBeAG was negative, HBeAb was positive
3. HBV DNA was undetectable.
4. ultra-sound was normal.
5. I was possibly infected when I was a child.

Now it is time for me to do semiannual tests. I am wondering what tests I need to do this time. I don't see any reason to do HBsAg again. Help would be appreciated.