Serum Antibody Screening for *Coccidioides* (IgG)

What Does This Test Measure?

The test measures the presence of IgG antibodies against *Coccidioides*, a fungus that can cause infections. IgG antibodies are part of your immune system’s long-term response to infection. This test is used primarily to screen for past exposure rather than active disease.

Why Might You Need This Test?

Your healthcare provider may order this test if you live in or have traveled to an area with high risk of *Coccidioides* exposure (e.g., parts of the southwestern U.S., Central/South America). It may also be used if you have symptoms like cough, fever, or fatigue that could relate to a fungal infection.

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 a few minutes, and you may feel a brief pinch. If you’re pregnant, have a bleeding disorder, or take blood-thinning medications, let your provider know.

What to Expect After the Test

You can return to your normal activities immediately. There’s no downtime, but watch for signs of bruising, swelling, or unusual bleeding at the injection site. If you experience severe pain or bleeding, contact your provider right away.