Chlamydia trachomatis IgA Antibody (Genital Specimen) – Serology
This test detects antibodies of the IgA type against *Chlamydia trachomatis*, a common bacterial cause of sexually transmitted infections (STIs) that can affect the genital tract, including the cervix, uterus, or urethra. It helps identify past or current infection when other tests may not be conclusive.
["This test may help diagnose or confirm a history of chlamydia infection in genital specimens."]
Key facts at a glance
- LOINC
- 6338-8
- Short code
- C psittaci Ag Genital Ql IA
- Synonyms
- C psittaci Ag Genital Ql IA
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- 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 Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like unusual discharge, pain during urination, or lower abdominal pain, or if you’ve been exposed to chlamydia. It may also be used as part of routine screening for STIs, especially in high-risk groups.
What to Expect Before the Test
No special preparation is needed. A healthcare provider will collect a sample from your genital area (e.g., cervix or urethra) using a swab. The sample is then sent to a lab for testing. You may experience mild discomfort, but it’s usually brief.
What the Test Results Mean
Positive results indicate the presence of IgA antibodies, suggesting past or current infection. Negative results mean no detectable antibodies were found in this sample. Results alone don’t confirm active infection—your provider may order additional tests (e.g., culture or nucleic acid amplification) for diagnosis.
Common Causes of False Results
False positives or negatives can occur due to recent infection, prior vaccination, or cross-reactivity with other bacteria. If results are unclear, your provider may repeat testing or use different methods to confirm.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
IgA Antibody to Chlamydia trachomatis
Frequently asked questions
Chlamydia trachomatis is a leading cause of preventable infertility and chronic pelvic pain in women, and can cause urethritis or proctitis in men. Untreated infections can lead to complications like ectopic pregnancy or Reiter’s syndrome. Early detection and treatment with antibiotics can prevent these issues.
Will I need to take any special precautions after testing?
Can I get this test if I’m pregnant?
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