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Chlamydia psittaci IgG Immunoassay (Serum/Plasma)

Published: August 9, 2026Updated: August 16, 2026

This test measures the level of antibodies your body produces in response to *Chlamydia psittaci*, a bacterium that can cause respiratory infections like pneumonia.

Quick summary

["Detects past exposure to a rare but serious bacterial infection."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
51809-2
Short code
C psittaci IgM Ser IA-aCnc
Synonyms
C psittaci IgM Ser IA-aCnc
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
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

What This Test Measures

The test looks for IgG antibodies, which your immune system creates after being exposed to *Chlamydia psittaci*. These antibodies don’t indicate an active infection but suggest you may have been exposed in the past.

Why It’s Done

Doctors may order this test if you’ve had contact with birds (such as parrots, pigeons, or other poultry) or if you develop symptoms like fever, cough, or breathing difficulties after exposure.

What to Expect Before the Test

No special preparation is needed. A blood sample is taken from a vein in your arm, similar to other blood tests. You may feel a slight pinch, but it’s usually over quickly.

What the Results Mean

Positive results indicate the presence of IgG antibodies, suggesting past exposure. Negative results mean no detectable antibodies were found at this time. Results alone don’t confirm an active infection—additional testing may be needed if symptoms persist.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

While this test helps identify past exposure to *Chlamydia psittaci*, it’s not used to diagnose current infections. Symptoms like pneumonia or respiratory distress should prompt medical evaluation, including possible cultures or other tests. Early treatment with antibiotics can prevent complications, especially if exposure was recent.

Short name

Chlamydia psittaci Antibody Test

Frequently asked questions

How long does it take to get results?
Results are typically available within 24 to 72 hours, depending on your lab’s processing schedule. Follow-up with your healthcare provider if you have questions about your results.
Can I have this test if I’m pregnant?
Yes, this test is generally safe during pregnancy. However, your healthcare provider may still recommend additional testing if you have symptoms of respiratory illness or recent bird exposure.
What if my test is positive?
A positive result means you may have been exposed to *Chlamydia psittaci* in the past. Your doctor may recommend further evaluation, such as chest X-rays or cultures, if you develop symptoms like fever, cough, or breathing difficulties. Treatment isn’t typically needed for past exposure unless symptoms arise.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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