Chlamydia psittaci IgG antibody (serum/plasma) – Immunoassay
This test measures your body’s immune response to *Chlamydia psittaci*, a bacteria that can cause respiratory infections like pneumonia. It helps doctors assess past exposure or infection risk.
["This test helps evaluate exposure to a rare but serious bacterial infection."]
Key facts at a glance
- LOINC
- 16586-0
- Short code
- C psittaci IgA Titr CSF IF
- Synonyms
- C psittaci IgA Titr CSF IF
- Category
- chemistry
- Sample
- csf
- Container
- Sterile tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- if
- CPT
- 82784
- Specimen volume
- 1-2 mL
- Stability
- Immediate analysis required, Refrigerated: 1h
- Hemolysis max
- 200
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test detects IgG antibodies specific to *Chlamydia psittaci*, a bacterium linked to conditions like psittacosis (a respiratory illness) in birds and humans. These antibodies indicate your immune system has encountered the bacteria at some point, often months or years prior. The method uses an immunoassay to identify these antibodies in your serum or plasma sample.
Why It’s Done
Your doctor may order this test if you have symptoms like fever, cough, or fatigue that could suggest an infection from *Chlamydia psittaci*, especially if you’ve had contact with birds or poultry. It’s also used in screening for occupational exposure (e.g., veterinarians, poultry workers).
Sample Collection
A blood sample is drawn from a vein in your arm. The blood is processed to separate serum (liquid part) or plasma (blood without clotting factors), then sent to a lab for testing.
What to Expect Before Testing
No special preparation is needed. Wear comfortable clothing and bring your insurance card if required. Avoid alcohol for 24 hours before your appointment to ensure accurate results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results suggest past exposure to *Chlamydia psittaci*, which may indicate a history of psittacosis or other related infections. While IgG alone doesn’t confirm active infection, it can guide further testing (e.g., IgM antibodies) or monitoring. Negative results mean no detectable antibodies were found, but they don’t rule out past exposure if testing was done too soon after infection.
Short name
IgG Antibody to Chlamydia psittaci
Frequently asked questions
How long does it take to get results?
Can I have this test if I’m pregnant?
What if my results are positive?
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