Coccidioides complement fixation

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Coccidioides antibody test

No Coccidioides immitis antibodies are detected.

Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.

Abnormal results mean that Coccidioides immitis antibodies are present. This can mean that you have a current or past infection.

The test may be repeated after several weeks to detect a rise in titer (antibody concentration), which confirms an active infection.

In general, the worse the infection, the higher the titer, except in people with a weakened immune system.

There can be false positive tests in patients with other fungal diseases such as histoplasmosis and blastomycosis, and false negative tests in people with single lung masses from coccidioidomycosis.

Review Date: 08/28/2009
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School, Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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