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Test ID UBLAS Blastomyces Antigen, Quantitative, Enzyme Immunoassay, Random, Urine

Specimen Required

Supplies: Aliquot tube, 5 mL (T465)

Container/Tube: Plastic vial

Specimen Volume: 4 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

3. Do not centrifuge to remove particulates.

Useful For

Diagnosis of infection with Blastomyces dermatitidis


Monitor antigen levels following initiation of antifungal treatment

Method Name

Enzyme Immunoassay (EIA)

Reporting Name

Blastomyces Ag, Quant EIA, U

Specimen Type


Specimen Minimum Volume

2.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 14 days
  Frozen  28 days
  Ambient  7 days

Reference Values


Not detected



Not detected: 0.0 ng/mL

Detected: <1.3 ng/mL

Detected: 1.3-20.0 ng/mL

Detected: >20.0 ng/mL

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
UBLAS Blastomyces Ag, Quant EIA, U 101415-8


Result ID Test Result Name Result LOINC Value
BLASQ Blastomyces Ag Result 41746-9
DEXBU Blastomyces Ag Value 93429-9

Day(s) Performed

Monday through Saturday

Report Available

Same day/1 to 3 days


If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.