Test Overview
Test Methodology

Complement Fixation (CF)/Immunodiffusion

Test Usage

Aiding in the diagnosis of Histoplasma meningitis in spinal fluid specimens

Reference Range *

Negative

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

Test Limitations

Cross-reacting antibodies with coccidioidomycosis or blastomycosis may cause false-positive results for Histoplasmosis.

Test Details
Days Set Up
Monday - Friday
Analytic Time

3 - 9 days

Soft Order Code
HICSF
Synonyms
    Laboratory
    Sendout
    Reference Laboratory
    Mayo HICSF
    Section
    Special Testing
    Specimen Requirements
    Collection Instructions

    Collect CSF in a sterile tube. Seal tightly and parafilm to prevent leakage, or transfer to screw capped aliquot tube (preferred). Send to Specimen Processing refrigerated. For MLab client use only, for Michigan Medicine patients/physicians, we send to MDHHS as FUNC.

    Special Handling

    Available for MLab clients only. For Michigan Medicine patients/physicians, we send to MDHHS as FUNC.

    Normal Volume

    1 mL CSF

    Minimum Volume

    0.8 mL CSF

    Storage Temperature
    Refrigerated preferred, frozen acceptable
    Additional Information

    Test performed by Mayo Clinic Laboratories

    Billing
    CPT Code
    86698 x 3
    Fee Code
    AA538 x3
    NY State Approved
    No