In certain conditions, a low titer may essentially indicate the efficient removal of infectious pathogens by the immune system. In contrast, a high titer may simply be due to the presence of residual antibodies from a previous infection, or unsuccessful attempts to form antigen-antibody complexes.

What does it mean when your titers are high?

When titers are above a certain threshold, it demonstrates that the immune system has had prior exposure to either a vaccine or pathogen. An antibody titer test can be used in several different situations: Assessing past disease exposure: The presence of antibodies can reflect previous exposure to a pathogen.

What does an abnormal titer mean?

Abnormal results depend on which antibodies are being measured. Abnormal results may be due to: Autoimmune disease. Failure of a vaccine to fully protect you against a certain disease. Immune deficiency.