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My dog failed rabies test. Will another vaccine increase titer?

Updated On September 23rd, 2025

Pet's info: Dog | Papillon | Female | 6 lbs

My dog failed rabies antibody blood test yesterday. Her first rabies vaccine was July 2016 so I thought she would have enough antibody left in her system. When the result came she had her annual rabies a couple of weeks early because of failed result. In 30 days she will be tested again. What if she has another vaccine 2 weeks after yesterday's rabies vaccine and blood test 2 weeks after that? Will it increase the chance of > 0.5 IU/mL? Thank you!

1 Answer

Most Helpful Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on June 30th, 2017

Unfortunately it's not likely to increase the chances, what I usually recommend in such a case is to have the vaccine done, then have the test done two weeks later, if the results are not good then have another test done 2 weeks after that.

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