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Coccidioidin or Spherulin Skin Test
 See all Pictures & Images
What do Abnormal Results Mean?
A positive reaction indicates there has been exposure to the microorganism. This test can be very helpful in diagnosing early infection, since the skin test can be positive 2-21 days after the onset of symptoms, even before serology is positive. A significant number of patients will have anergy, or will not respond to this test even when they have the disease.
There can be false-positives, in that there can be positive results when the patient has been exposed to the funguses Histoplasma or Blastomyces, but not Coccidioides.
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• Definition
• Why is the Test Performed?
• How is the Test Performed?
• How to Prepare for the Test?
• How will the Test Feel?
• Normal Values
• What do Abnormal Results Mean?
• Special Considerations
• Risks
• Pictures & Images
Topics that might be of interest to you Diseases & Conditions
• Anaphylaxis
• Coccidioidomycosis
• Pneumonia
• Pulmonary Tuberculosis
Other Topics
• Adolescent Test or Procedure Preparation
• Allergen
• Infant Test/Procedure Preparation
• Preschooler Test/Procedure Preparation
• School Age Test/Procedure Preparation
• Toddler Test/Procedure Preparation
Review Date : 1/13/2002
Reviewed By : Camille Kotton, M.D., Infectious Diseases Division, Massachusetts General Hospital and Brigham and Women's Hospital, Boston, MA. Review provided by VeriMed Healthcare Network.
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