My brother met with an accident and doctor told that he has week conditions for hepatitis B. So he tested HbSAg and result was non reactive. So just wanted to know like what other tests should i do to confirm that whether he has that or it is confirn that he does not have that and what should be my preventive steps? Should i also do hepatitis B tests for all of my family members?? Also i don't know how doctor thought that he might have hepatitis b like on what symptoms but please help me what should i do? And what steps ahould i take or which type of doctor should i meet to confirm and be sure? Please help