1) in a patient recovered from acute HBV: Anti HBsAg , Anti HBcAg Ig G
2) in a C/C carrier : HBsAg , Anti HBcAg Ig G
3) after immunisation : Anti HBsAg
4) best indicator of infectivity: HBeAg
5) best indicator of replication : HBV DNA
6) marker for window period : Anti HBcAg IgM
7) protective antibody : Anti HBsAg
8) acute infection : HBsAg, Anti HBcAg Ig M (plus in high virus load HBeAg and in low level infection Anti HBeAg)