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Test Code CBL Blastomyces Antibody by Immunodiffusion, Spinal Fluid

Reporting Name

Blastomyces Ab Immunodiffusion, CSF

Performing Laboratory

Mayo Medical Laboratories in Rochester

Method Name


Specimen Type


Specimen Required

Container/Tube: Sterile vial

Specimen Volume: 0.5 mL

Forms: If not ordering electronically, complete, print, and send a Neurology Test Request Form (T732) with the specimen (

Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
CSF Refrigerated (preferred) 14 days
  Frozen  14 days

Reject Due To


Mild OK; Gross OK


Mild OK; Gross OK





Reference Values


Day(s) and Time(s) Performed

Monday through Friday; 9:30 a.m.

Analytic Time

2 days

Specimen Retention Time

14 days

Useful For

Detection of antibodies in patients having blastomycosis


A positive result is suggestive of infection, but the results cannot distinguish between active disease and prior exposure. Furthermore, detection of antibodies in cerebrospinal fluid (CSF) may reflect intrathecal antibody production, or may occur due to passive transfer or introduction of antibodies from the blood during lumbar puncture.


Routine fungal culture of clinical specimens (eg, CSF) is recommended in cases of suspected blastomycosis involving the central nervous system.

Test Classification

This test uses a standard method. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


LOINC Code Information

Result ID Reporting Name LOINC Code
15134 Blastomyces Immunodiffusion (CSF) 51741-7