Chlamydia psittaci IgG antibody, serum/plasma (immunoassay)
This test measures the level of antibodies your body produces in response to *Chlamydia psittaci*, a bacterium linked to psittacosis—a rare but serious respiratory illness often spread by birds.
["Detects past exposure to the bacterium that may cause illness after contact with infected birds."]
Key facts at a glance
- LOINC
- 22181-2
- Short code
- C psittaci IgM Titr Ser
- Synonyms
- C psittaci IgM 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
While you may not currently have symptoms, this test helps identify if your immune system has encountered *Chlamydia psittaci* in the past. This can be important if you’ve had recent exposure to birds, particularly those from exotic or poultry settings, or if you’ve traveled to regions where psittacosis is more common.
What Does a Positive Result Mean?
A positive result suggests your body has produced antibodies against *Chlamydia psittaci*, indicating past exposure. This does not necessarily mean you are currently infected or ill, but it may warrant further evaluation by your healthcare provider, especially if you’ve had symptoms like fever, cough, or respiratory distress after exposure.
What Does a Negative Result Mean?
A negative result means your blood did not detect antibodies against *Chlamydia psittaci* at the time of testing. This does not rule out possible exposure or infection, as it may take time for your immune system to develop detectable antibodies. If you suspect exposure, discuss follow-up testing with your doctor.
When Might You Need This Test?
Your doctor may recommend this test if you’ve had close contact with birds (e.g., parrots, pigeons, or other poultry), recent travel to areas with higher psittacosis risk, unexplained respiratory symptoms after exposure, or if you’re part of a group at increased risk (e.g., bird handlers, travelers).
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Chlamydia psittaci IgG Antibody
Frequently asked questions
What are the typical reference ranges for this test?
Can I get this test at home or without a doctor’s order?
How long does it take to get results from this test?
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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy