![]() ![]() The first is that no exposure to that organism has occurred and therefore your pet's current clinical condition is due to another cause. The lack of an antibody titer to an organism can indicate either of two things. Since antibodies are only produced after exposure to 'foreign' material including organisms such as bacteria and viruses, they indicate exposure to that organism.īecause antibodies remain in circulation for quite some time, the presence of an antibody titer to a particular organism does not necessarily mean that that organism is the cause of the illness that your pet is currently experiencing. For this particular test, a positive reaction is defined as the highest serum dilution capable of causing at least 50% of the Leptospira bacteria to clump. The end, or titer, is the highest dilution of serum that is still capable of producing a positive test reaction. In this titer test, different strains of Leptospirosis organisms are exposed to serial dilutions of test serum. As an example, one of the most commonly used antibody titers is for detection of antibodies against Leptospirosis (a bacterial disease). Serum sample that causes a positive test reaction."Ī positive test reaction differs for each particular test. "An antibody titer refers to the highest dilution of a ![]()
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