Chlamydia trachomatis Antibodies (IgG, IgA, IgM) Test
This test measures three antibody types, IgG, IgA, and IgM, to Chlamydia trachomatis in a blood serum sample. Quest describes Chlamydia trachomatis as the most common sexually transmitted bacterial infection.
About this test
The test uses an immunofluorescence assay on a 1 mL serum sample to measure IgG, IgA, and IgM antibody levels against Chlamydia trachomatis. Antibody testing looks at the immune system's response to the organism, which is a different approach from tests that detect the organism's genetic material directly.
Quest lists three separate antibody results for this test, reported together as an interpretation. Because antibodies can reflect current or past exposure, a clinician reads these results alongside a person's history and any other testing ordered.
Test details
| Collection | Quest patient service center |
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Quest resources
Additional details
What this test looks at
The test reports IgG, IgA, and IgM antibody levels to Chlamydia trachomatis, along with an interpretation, using an immunofluorescence assay on a serum sample. Reporting all three antibody classes together, rather than just one, gives a clinician a fuller picture of the antibody response than a single class alone.
This test isn't part of the Celio Health store at the moment, so it can't be ordered or requested here. The test menu lists everything that can.
Laboratory results should always be interpreted by a licensed clinician who knows your health history. This page is information about a test, not medical advice.
Frequently asked questions
What does this test measure?
It measures IgG, IgA, and IgM antibody levels to Chlamydia trachomatis in a serum sample, using an immunofluorescence assay.
How is the sample collected?
The test uses a 1 mL serum sample from a routine blood draw.
Do I need to prepare for this test?
No preparation instructions are listed for this test, though people follow any instructions their ordering clinician provides.
Is this the same as a test that detects the Chlamydia organism directly?
No. This test measures antibodies the immune system produces in response to Chlamydia trachomatis, rather than detecting the organism's genetic material directly.