Initial hepatitis B tests, how do we understand them and what do we do? Part-1

The video explains how to diagnose hepatitis B infection
Initial hepatitis B tests, how do we understand the tests and what do we do based on the results?
What is the first analysis that should be done?
What do you do if the test result is positive?
What do you do if the result is negative?
Antigen analysis for hepatitis B virus