ARUP's Laboratory Test Directory

0050503: Coxsackie A9 Virus Antibodies by CF

Test Mnemonic: COX A9
Methodology: Complement Fixation

Performed: Mon-Fri

Reported: 2-5 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 should 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 specimen plainly as "acute" or "convalescent." 

Unacceptable Conditions: Severely lipemic, hemolyzed, 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:
Single positive antibody titers of greater than 1:32 may indicate past or current infection.  Seroconversion or an increase in titers between acute and convalescent sera of at least fourfold is considered strong evidence of current or recent infection.



CPT Code(s):
86658

 

 

 
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