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Test Code SBL Blastomyces Antibody Immunodiffusion, Serum


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL Serum

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Useful For

Detection of antibodies in serum specimens from patients with blastomycosis

Method Name

Immunodiffusion (ID)

Reporting Name

Blastomyces Ab, Immunodiffusion, S

Specimen Type

Serum

Specimen Minimum Volume

Serum: 0.3 mL

Specimen Stability Information

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

Reference Values

Negative

Interpretation

A positive result is suggestive of infection, but the results cannot distinguish between active disease and prior exposure.

 

Routine culture of clinical specimens (eg, respiratory specimen) is recommended in cases of suspected, active blastomycosis.

Clinical Reference

1. Theel ES, Kus JV, Grys TE, Ampel NM, Schwartz IS, Zhang SX. Practical Guidance for Clinical Microbiology Laboratories: Antibody and antigen detection methods for dimorphic fungal infections. Clin Microbiol Rev. 2025;38(2):e0000520. doi:10.1128/cmr.00005-20

2. Gauthier GM, Klein BS. Blastomycosis. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 9th ed. Elsevier; 2020:3177-3189

Day(s) Performed

Monday through Friday

Report Available

2 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

86612

LOINC Code Information

Test ID Test Order Name Order LOINC Value
SBL Blastomyces Ab, Immunodiffusion, S 5058-3

 

Result ID Test Result Name Result LOINC Value
15125 Blastomyces Immunodiffusion 5058-3