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Chlamydia psittaci IgG Antibody, Serum (Quantitative)

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. Antibodies indicate past exposure or infection, though they don’t confirm an active illness.

Quick summary

["Antibodies may linger long after infection has cleared, so this test helps track exposure history rather than diagnose current illness."]

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

Key facts at a glance

LOINC
109464-8
Short code
C psittaci IgA Msmt CSF
Synonyms
C psittaci IgA Msmt CSF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

IgG antibodies are a type of immune protein your body makes when it encounters a foreign invader like a bacterium. In this test, we detect IgG specific to *Chlamydia psittaci*, a type of chlamydia that can cause severe respiratory infections in birds and occasionally in humans.

Why It Matters for You

While IgG antibodies suggest past exposure, they don’t always mean you’re currently infected. This test is often used in research, occupational health, or when evaluating exposure risks (e.g., for bird handlers or travelers to endemic areas).

How It’s Done

A blood sample is drawn from a vein in your arm. The serum (liquid part of blood) is then tested in a lab using an immunoassay method to measure antibody levels.

When You Might Need This Test

You may have this test if you’ve had contact with birds, work in settings where exposure is possible (e.g., poultry farms), or if symptoms like fever, cough, or fatigue persist after a respiratory illness.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

IgG Antibody to Chlamydia psittaci

Frequently asked questions

What does a positive result mean?
A positive IgG result indicates your body has likely encountered *Chlamydia psittaci* before, triggering an immune response. However, this doesn’t confirm an active infection—it may show up years later. Always consult your doctor for interpretation, as other factors (like prior vaccination or cross-reacting antibodies) could influence results.
What does a negative result mean?
A negative result means your blood sample didn’t show detectable IgG antibodies to *Chlamydia psittaci* at the time of testing. This doesn’t rule out past exposure or an active infection—other tests or follow-ups may be needed if you suspect exposure.
How long might it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Your healthcare provider will discuss the meaning of your results with you.
  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