Chlamydia trachomatis IgG is a blood test that detects IgG antibodies produced by the immune system against Chlamydia trachomatis, a bacterium that can cause sexually transmitted and other infections. The test is used to assess evidence of previous or ongoing exposure and may support evaluation of certain complications associated with chlamydial infection. However, IgG antibodies alone generally cannot confirm an active infection and should be interpreted with clinical findings and other tests.
The test may help identify previous exposure to C. trachomatis and can support evaluation of certain complications associated with past chlamydial infection.
A positive result indicates that antibodies against C. trachomatis were detected. It may suggest previous exposure but does not by itself confirm an active infection.
A negative result means detectable IgG antibodies were not found. It may indicate no previous exposure, although timing and test sensitivity can affect interpretation.
No. IgG antibodies may persist after an infection has resolved. Tests that directly detect the organism, such as nucleic acid amplification tests, are generally preferred for diagnosing active infection.
Yes. Untreated infection can lead to complications such as pelvic inflammatory disease and fertility-related problems. In some cases, infection can affect other parts of the body.
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