Hi, I am an American Board Certified Neurologist with vast experience in diagnosing & treating all types of neurological & medical conditions including the concerns of Hepatitis B related blood test report of your Mom you have mentioned here, and I am very glad to help you with your health concerns.
Her report tells she has positive antibodies against hepatitis B
This is good news, this means she has immunity against hepatitis B virus
Her Hepatitis B antigen is negative, which means she is not having any infection with this virus, but she is already immunised against this virus, so the presence of antibodies will protect her against any future infection with this virus
Her antibody titer (HBSAb titer) is 42.4, it should be above 11, so her level is very good, which means she is very well protected against Hepatitis B virus, so this is a very good news for her
Please let me know if you have any further questions, and please click a positive rating to credit for the time & effort put by me in answering your question.