Coxiella burnetii (Q-Fever) Antibody IgG, Phase I & II by IFA
0050462
Ordering Recommendation
Submit With Order
Mnemonic
Q-F 1,2
Methodology
Semi-Quantitative Indirect Fluorescent Antibody
Performed
Tue, Fri
Reported
1-5 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Serum separator tube.  
Specimen Preparation
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.1 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as "acute" and "convalescent."  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Contaminated, hemolyzed, or severely lipemic specimens.  
Remarks
 
Stability
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)  
Reference Interval
Phase I: < 1:16 No antibody detected.
Phase II: < 1:16 No antibody detected.
Interpretive Data
Single phase II IgG titers of 1:256 and greater are considered evidence of C. burnetii infection at some time prior to the date of the serum specimen. Phase I antibody titers of 1:16 and greater are consistent with chronic infection or convalescent phase of Q-fever.
Note
CPT Code(s)
86638 x2
Components
Component Test Code*Component Chart Name
0050463Q-Fever, Phase I IgG Antibody
0050464Q-Fever, Phase II IgG Antibody
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Cross References
  • Coxiella burnetii
  • Coxiella Titer
  • Q Fever Phases I and II antibody