What is the prevalence of antichlamydia immunoglobulin M (IgM) in sexually active adults and what does it suggest?

Updated: Sep 25, 2018
  • Author: Shahab Qureshi, MD, FACP; Chief Editor: Michael Stuart Bronze, MD  more...
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Antichlamydia immunoglobulin M (IgM) is uncommon in adults with genital tract infection. The prevalence of antichlamydial immunoglobulin G (IgG) is high in sexually active adults, even in those who do not have an active infection, and it likely is due to past infection. A statistically significant association exists between chlamydia-specific serum immunoglobulin A (IgA) and active disease.

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