Name: Blastomyces Ag
Test Name: Blastomyces Ag
Health Link Test Code: HCBLSTAG
LIS Test Code: BLSTAG
CPT Code(s): 87449
Methodology: Enzyme Immunoassay
May be used as an aid in diagnosis of disseminated or acute pulmonary blastomycosis.
Blastomyces antigen levels decline with therapy and increase with relapse, offering a method to monitor the effect of treatment and diagnose relapse.
This assay detects Blastomyces dermatitidis antigen.
Testing Site: Testing will be sent to an approved reference laboratory
Days Performed: Mon-Fri.
In-Lab Turnaround Time: 1 week.
|BAL||Sterile screw cap container||0.5 mL|
|Blood||9 mL red top or green top tube||1.2 mL serum|
|Body Fluid||Sterile screw cap containers||0.5 mL|
Numbered specimen tube from sterile
dispolsable lumbar puncture tray
|Urine||Sterile screw cap container||0.5 mL|
Testing Volume: 4 mL
Pediatric Testing Volume: 2 mL
Blood: Centrifuge. Transfer cell-free serum to plastic vial. Refrigerate.
Other specimen types: Refrigerate.
Transport specimen to UWHC Hospital Laboratory. Transport with coolant pack if coming from clinic location.
Samples collected in EDTA-lavender top tubes.
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.