Blastomyces Antigen Quantitative, Urine
Test Mnemonic
UBLSAG
CPT Codes
- 87449 - QTY (1)
Includes
- Blastomyces dermatitidis EIA, Interp
- Blastomyces Antigen, Urine
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Urine, random | Clean container (No preservatives) | Refrigerated |
Stability
| Environmental Condition | Description |
|---|---|
| Refrigerated | 2 weeks |
| Frozen | Indefinitely |
| Ambient | Unacceptable |
Days Performed
Tue, Thu, Sat
Turnaround Time
2 - 5 days
Methodology
| 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.