The antibody titer is a measure of the concentration of a specific antibody in the blood sample.
According to the antibody being tested, several normal values exist. The expected outcome is zero or negative if the test is looking for antibodies against your own bodily tissues. In some circumstances, a normal level is lower than a particular value. The typical result depends on the precise value for that immunisation if the test is being run to see if a vaccination fully protects you against a disease.
Negative antibody testing can rule out certain illnesses.
There may be a little variation in normal value ranges across laboratories.
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