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Chlamydia psittaci IgG antibody, serum/plasma (immunoassay)

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

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.

Quick summary

["Detects past exposure to the bacterium that may cause illness after contact with infected birds."]

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

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?
Reference ranges can vary by lab and testing method. Since this is an antibody test, a positive result is typically qualitative (detects presence or absence of antibodies) rather than a specific numeric value. Your healthcare provider will interpret results in the context of your symptoms, medical history, and exposure history.
Can I get this test at home or without a doctor’s order?
No, this test requires a prescription or order from a healthcare provider. It is typically performed in a clinical lab after a blood draw. Always follow your doctor’s instructions for testing.
How long does it take to get results from this test?
Results are usually available within 1–3 business days, depending on your lab’s processing time. Your doctor will discuss the results with you once they are ready.
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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