So, if you want to measure titers, do so intelligently. If you have vaccinated a puppy who may have been too young to respond to the vaccine, a titer test could tell you if a response is present. A previously vaccinated adult dog who has a gradually falling titer over the years very likely still has immunity from the memory cells, so don't forget that a titer test won't show this immunity. If you equate a low titer in a vaccinated adult with a lack of immunity, you could make a very costly mistake in your animal's health care, by vaccinating again. See Vaccinations: Safety for the correlation between chronic disease and repeated vaccinations.
And if protection against invaders is your ultimate goal, rather than vaccinating repeatedly, you would do far better to strengthen the immune system. Transfer Factor does this safely, simply, and surely, in all species of animals, including Homo sapiens. www.Alt4Animals.com has more information on dosing and use for your animals.

