Hi, Thanks for your post. Following 1-4 months of Hepatitis B vaccination blood test should show anti-hepatitis B surface antigen antibody (anti-HBsAg) level above 100 mIU/ml as adequate response. This is only occurs in about 85-90% of individuals. This is known as Australia Antigen too. As you mentioned I really don t leve a riotous life it is advisable to get the levels of the antibody measured to know your exact status. Wishing you all the best.