I haven't remeasured but my children are young: 8, 6 and 3. They just had their re-vaccinations a couple of years ago. B/c we know the antibody numbers can decline w/o a concomitant decline in protection I don't think its important to re-test once the initial response is detected (following the 3rd shot). Recommendations for a booster vary but I know that some HBV parents like to give one at around age 13 or 14.
When were your kids vaccinated? Mine weren't titered until years after their vaccines and they turned up as unprotected. Now, they probably were but too much time had passed. To be safe we had the two older ones revaccinated (the baby was actually fine) and had the surface antigen test given to all of them. Then we did the titers in a timely fashion.
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