Clinics and Departments

Laboratory Services

Lab Dept:

Urine/Stool

Test Name:

BLASTOMYCES ANTIGEN, URINE

General Information

Lab Order Codes:

BAG

Synonyms:

N/A

CPT Codes:

87449 – Infectious agent antigen detection by EIA technique

Test Includes:

Urine Blastomyces Antigen level reported in ng/mL.

Logistics

Test Indications:

Aid in diagnosis of disseminated or acute pulmonary blastomycosis.

Lab Testing Sections:

Urine/Stool - Sendouts

Referred to:

Mayo Medical Laboratories (MML Test: 91407/FBLAS forward to MiraVista Diagnostics)

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours, test performed Monday - Friday

Turnaround Time:

4 - 8 days

Special Instructions:

Use sterile collection technique.

Specimen

Specimen Type:

Urine, random

Other specimen types tested: Bronchoalveolar Lavage (BALF), Sterile Body Fluid, CSF, Serum

Container:

Sterile leak-proof container

Draw Volume:

2 mL (Minimum: 1 mL) urine or other acceptable specimen type

Processed Volume:

Same as Draw Volume

Collection:

Routine urine collection, or other appropriate collection technique. Maintain sterility during collection and forward promptly to the laboratory.

Special Processing:

Lab Staff: Mix random urine sample well. Remove aliquot into a plastic, 13 mL urine tube. Store and ship at refrigerated temperatures. Forward promptly.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimens

Interpretive

Reference Range:

ng/mL

Result Interpretation

None Detected

None Detected

Results above the limit of detection, but below 0.2

Positive – Below the Limit of Quantification

0.2 – 14.7

Reported as the actual result in ng/mL

>14.7

Positive, Above the Limit of Quantification

Test performed by:
MiraVista Diagnostics
444 Decatur Blvd., Suite 300
Indianapolis, IN 46241

Critical Values:

N/A

Limitations:

Heterophile antibodies and rheumatoid factor can cause positive interference. Cross-reactions due to closely related antigenic epitopes are seen in patients with histoplasmosis, paracoccidioidomycosis, and penicilliosis. Rare cross-reactions have been seen in patients with aspergillosis and cryptococcosis.

Methodology:

EIA (Enzyme Immunoassay)

References:

Mayo Medical Laboratories May 2012

Updates:

7/2/2009: Added other specimen types (BALF, other sterile body fluids)
2/8/2011: Units change, previously reported as EIA Units. Reference range update.
5/15/2012: Note reference range interpretation update.



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