I have Chronic Hepatitis B virus infection. Since last 3.5 years I am taking Tenofovir Alafenamide. Within 6 months my Viral load became Undetectable and Alt / Ast become normal. But since last 6 months Alt & Ast  level starts to fluctuate. On  06/06/23 Atl -73 Ast 38 On 07/08/23 Alt-61 , Ast-39 On 19/09/23 Alt-57, Ast-33 On 28/12/23 Alt 81, Ast -43 Hbv DNA quantitative as on 03/01/24 - Below Detection Limit USG whole Abdomen as on 11/08/2023- Normal Sonographic Study. What could be possible reason behind this fluctuation.