ARUP's Laboratory Test Directory

0050130: Blastomyces Antibody by CF

Test Mnemonic: BLASTO
Methodology: Complement Fixation

Performed: Sun-Fri

Reported: 2-4 days

Specimen Required:  
Collect: One 4 mL SST.

Transport: 1 mL serum at 2-8°C. (Min: 0.5 mL)  Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.3 mL serum at 2-8°C.

Remarks: Separate serum from cells ASAP. Acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Please mark specimens plainly as "acute" or "convalescent."

Unacceptable Conditions: Severely lipemic or contaminated specimens.

Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Reference Interval:
< 1:8

Interpretive Data:
Less than 40% of patients have positive tests when active disease is present. Frequent cross-reactions occur in patients with histoplasmosis or coccidioidomycosis. Paired sera may detect rise in titer to single antigen.



Note:
Negative fungal serology does not rule out the possibility of current infection.

CPT Code(s):
86612

 

 

 
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