Question
How soon after birth can a baby whose mother has Hepatitis B undergo a Hepatitis B examination, especially if the baby has already received the Hepatitis B vaccine and Hepatitis B immune globulin?
Answer
It is recommended to undergo a Hepatitis B examination at six months after birth. Immediate testing after vaccination is not very meaningful, as the success rate of blocking measures exceeds 95%. If you want to check whether the Hepatitis B vaccine has been successfully administered, it is suggested to get tested 20 days after completing the full course of Hepatitis B vaccination. Due to individual differences, the chances of producing antibodies also vary. Only 18% of individuals produce antibodies two weeks after the first dose, and this increases to 41% one month later; after the second dose, 80-90% of recipients produce antibodies; and after the third dose at six months, 96% of individuals have a positive antibody conversion, which can last for years.