From what I understand, the vaccination does not "take" in all pepole, and some need a booster at some point. For example, my best friend was in nursing school & had the 3 shots for Hep B, found out later that they didn't work for him, and needed a 4th, which eventually worked out. Me, I was vaccinated against A & B, found out later I had C, so my dr. rechecked my titers for A & B to make sure they "took," which, fortunately, they did, and I didn't need any further boosters for A & B.
Harry Potter thank you very much for your response. Do you know if it is too late to vacinate Hep A if her test is positive? For the B can they still vacinate her?
I'm not a doctor and am not very knowledgeable about hep B. But I'm almost certain that when you are vaccinated against hep A and B, it causes your body to create antibodies to these viruses (without actually giving you the virus itself). Once these antibodies are established within your body, they then serve as "watchdogs" which know how to identify and fight hep A and B as soon as they become present in the body (in the event of an exposure). Identifying and attacking the virus before it gets a foothold is a key factor in preventing a full blown infection. To my knowledge, this is basically how the vaccine works to impart immunity. So the mere presence of antibodies alone does not mean your daughter is infected. And it certainly sounds like your doctor has simply stated that they detected antibodies for hepB, and according to her records she was vaccinated for hepB. This is probably the only reason why she has antibodies, and not necessarily because she is (or was) actually infected with hepB. And based on what he says, it sounds like just to be on the safe side they want to run another antibody test that presumably will confirm that her antibodies are the specific type associated with a vaccination, and not an actual infection (which might technically have been possible prior to being vaccinated). Hep B is usually transmitted by IV drug users sharing needles or through unprotected sexual contact. So if your daughter is young and hasn't engaged in any of those activities, it's probably very unlikely she's come into contact with it.
Also, the hepA antibodies may have been from a vaccination as well (do you know if she's ever had one?). If not, worst case scenario is that she did or does have hepA, which fortunately usually is successfully cleared in nearly all healthy people without any adverse long term effects. However, it will leave behind beneficial antibodies that will protect against future infection.
The liver enzyme tests (called AST and ALT) are basic tests which can also help confirm that she is not infected with any form of hepatitis. If she were, odds are her enzyme levels would be elevated (especially in the early "acute" phase of an infection). Also, just in case they haven't screened her for hepatitis C, you might want to have them check her for that too just in case (if they haven't already). Hep C is one of the most common forms of hepatitis (if not the most common). I have it and most of the people here have hep C. Many of us had it for decades before finding out we were infected. So it's not a bad idea to be checked out for this as well (if she hasn't been checked already).
Hope this helps a little, take care.
Thanks for your response, it makes me feel better about hep B. I have hep C that is the reason I have her checke for Hep a, b, and c. Her Hep C test is negative. She has not vacinated for hep A yet, I hope it is not too late to get Hep A vacinate.
Very often the Hep A and Hep B shots (vaccines) are given together...they are also given in a sequence of three shots, usually over the course of six months. It is unlikely that your daughter currently has both A and B viruses. It sounds more like she has the antibodies to them, from either past exposure or the vaccine. Try not to worry and see your (her) doctor. Su