normal alt for men is 30 and 19 for women, contries like US or Uk may still use wrong limits like you reported simply because most population has alt abnormal....so the situation can be kept quiet and junk food sold, afterall people dead is not bad for economy, high health care cost is...
if hbsag is negative you have no hbv, you had it and clear it during your life.hbv has no symthoms so you didn t notice
check you hbsab and hbvdna pcr
ast and alt are abnormal for junk processed food you eat probably, all processed food damages livers, some can regenerate and some not and go on to fatty liver, liver cancer or cirrhosis.the countries were junk food or processed food with chemical addictives is common are also those with most destroyed liver (uk, Us just an easy example) and most people is unhealthy and go on dying for this without knowing because fibroscans which can scan all population were kept away for more than a decade