Analytic Time
MiChart Code
Fungal Serology Panel
Soft Order Code

Test Updated:


Blastomyces Antibody
Coccidioides Antibody
Histoplasma Antibody
Blastomyces Ab, Serum.
Coccidioides Ab, Serum.
Histoplasma Ab, Serum.
Fungal Serology Panel, Serum

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Test Overview

Test Methodology

Routine testing is performed by the complement fixation method. Immunodiffusion methodology will be used to resolve questions of cross-reactivity, if the specimen has anti-complementary antibodies or if specifically requested in suspected cases of blastomycosis.

Test Usage

To obtain serologic evidence of an immune response (antibody production) to Histoplasma capsulatum, Blastomyces dermatitidis, or Coccidioides immitis.

Reference Range

Negative. A four-fold or greater rise in titer between acute and convalescent paired specimens, collected 14-21 days apart is consistent with the diagnosis of recent infection. In the presence of high titer against one fungal pathogen, other low level antibody titers may represent a cross-reaction and are not considered significant.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

MLabs client requests for this test will be sent to Mayo Medical Laboratories.

Red Top Tube
Yellow Top Tube
Normal Volume
4 mL serum
Minimum Volume
3 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.