Chlamydia trachomatis Serology (IgG and IgA Antibodies) – Confirmatory Test
This test checks for antibodies to *Chlamydia*, a common bacterial infection that can affect the reproductive system, eyes, or respiratory tract. Antibodies indicate past or current infection.
["Helps confirm if you’ve been exposed to *Chlamydia* and may guide treatment decisions."]
Key facts at a glance
- LOINC
- 41482-1
- Short code
- Chlamydia sp IgG+IgM Pnl Titr Ser
- Synonyms
- Chlamydia sp IgG+IgM Pnl Titr Ser
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters
Chlamydia is a sexually transmitted infection (STI) caused by bacteria. While some people may not have symptoms, others might experience discharge, pain during urination, or unusual bleeding. Antibodies in your blood can show if your body has fought off this infection, even if symptoms are gone. This test helps doctors diagnose and manage infections that might not show up with other tests alone.
What to Expect Before the Test
No special preparation is needed. A healthcare provider will collect a blood sample, usually from your arm. The test is done in a lab and results may take several days to weeks, depending on the lab.
What the Test Results Mean
Positive results indicate the presence of antibodies against *Chlamydia*, suggesting past or current infection. Negative results mean no detectable antibodies at the time of testing. Always discuss results with your healthcare provider, as they may recommend additional testing or follow-up.
Common Causes of False Results
False positives or negatives can occur due to recent vaccination, past infection, or cross-reactions with other infections. If results are unclear, your provider may order repeat testing or different tests to confirm.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Chlamydia Antibody Confirmation
Frequently asked questions
How is this test used in medical practice?
What symptoms might this test be ordered for?
Could this test be used for screening in asymptomatic individuals?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy