tenofovir and entecavir work on hbvdna the same in few months the problem is hbvdna undetactable is not hbv virus undetactable, the viru remains in the liver cells until hbsag is detactable
so you have to follow hbsag quantity in iu/ml if you want to see if you are clearing hbv and hbvdna only if you want to reduce liver damage
i actually made the opposite.. tdf for 12 months and statritng from 3 months ifn shots.. now i'm on ifn mon...
i remember after few weeks my DNA dropped form >100 000 000 to UND