Section: What Is a Lyme Titer?
A Lyme disease titer is a blood test performed on animals suspected of having Lyme disease, an insidious illness caused by the tick-transmitted spirochete Borrelia burgdorferi. This blood test determines the presence of antibodies specific for Lyme disease. The concentration of antibody in the blood is expressed as a ratio of the dilution at which it can be detected – the higher the dilution, the more antibody is present. A Lyme disease titer is indicated anytime a tick-borne illness is suspected. There are no real contraindications to performing this test in an animal suspected of having Lyme disease. What Does a Lyme Titer Reveal? A Lyme titer reveals past exposure to Lyme disease but does not always indicate illness. Animals that have been vaccinated for Lyme disease or previously exposed to Lyme disease will have finite Lyme titers.
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