Chlamydia psittaci IgG Antibody (Serum/Plasma)

What This Test Measures

IgG antibodies are a type of immune protein your body makes after exposure to *Chlamydia psittaci*. This test checks for their presence in your serum or plasma. If you’ve been exposed, your immune system will produce these antibodies, which can linger in your blood for months or years. This test is not used to diagnose active infection but rather to identify prior exposure.

Why It’s Ordered

Doctors may order this test if you’ve had contact with birds (especially parrots, cockatiels, or other psittacine birds), recent respiratory symptoms, or if you live in an area with known outbreaks of psittacosis. It’s also used in occupational health settings for bird handlers or veterinarians.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw blood. The process takes about 5 minutes, and you may feel a brief pinch. If you’re pregnant, have a bleeding disorder, or take blood-thinning medications, let your healthcare provider know before testing.

What the Results Mean

A positive result suggests you’ve likely been exposed to *Chlamydia psittaci* in the past. A negative result means you currently do not have detectable antibodies, but it doesn’t rule out recent exposure. Results are qualitative (yes/no) and not used to assess current infection status.