Blastomyces Antigen Quantitative, Urine

Test Mnemonic


CPT Codes

  • 87449 - QTY (1)


  • Blastomyces dermatitidis EIA, Interp
  • Blastomyces Antigen, Urine

Performing Laboratory


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLUrine, randomClean container (No preservatives) Refrigerated 


Environmental Condition Description
Refrigerated2 weeks

Days Performed

Tue, Thu, Sat

Turnaround Time

2 - 5 days


Name Description
Enzyme Immunoassay (EIA) 

Reference Range

Special Info

Specimens received in preservative will be rejected.

Clinical Info

Normal range: Not Detected This EIA test should be used in conjunction with other diagnostic procedures, including microbiological culture, histological examination of biopsy samples, serology and/or radiographic evidence, to aid in the diagnosis of blastomycosis. Positive test results should be correlated with other clinical findings and relevant exposure history.

Clinical Limitation

Antigen concentrations less than 1.25 U/mL or greater than 200 U/mL fall outside the linear range of the assay and cannot be accurately quantified. Cross-reactivity with other endemic mycoses (Histoplasma and Coccidioides) may occur.