Coccidioides IgG Antibody (Serum/Plasma)

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like coughing, fever, or fatigue, or if you live in or traveled to areas where *Coccidioides* is common (e.g., parts of the southwestern U.S., Central/South America). It can also help monitor treatment for a confirmed 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 about 5 minutes. If you’re pregnant, have a bleeding disorder, or are on blood thinners, let your provider know before the test.

What the Results Mean

Positive results indicate the presence of antibodies, suggesting past or current exposure to *Coccidioides*. The level of antibodies may help guide treatment or further testing. Results alone don’t confirm an active infection—your provider will consider symptoms, medical history, and other factors.

Possible Side Effects

Most people experience mild discomfort or bruising at the injection site. Rarely, you might have a slight fever or headache. If you develop severe pain, swelling, or signs of infection (like redness spreading from the site), contact your provider.