thank u very much for ur guidance
For your HBsAg test next time, just request automatic dilution, this will give you an exact quantity.
The hbsag test is quality test you need quantity test
Also you need lft, ultra sound and fibroscan.
But anyway pcr undetected is a good sign, if your hbsag is less then 1000 iu/ml you can clear by interferon with a very good chance.