Q Fever (Coxiella burnetii) Antibodies (IgG, IgM), with Reflex to Titers [37071]

Test Code

Alias/See Also

CPT Codes
86638 (x4)

If Q Fever screen is positive, IgG or IgM Phase I or Phase II, the appropriate Titer will be performed at an additional charge (CPT code(s): 86638 per titer performed).

Preferred Specimen
1 mL serum

Minimum Volume
0.2 mL

Transport Container
Plastic screw-cap vial

Transport Temperature
Refrigerated (cold packs)

Specimen Stability
Room temperature: 4 days
Refrigerated: 7 days
Frozen: 30 days

Immunofluorescence Assay (IFA)

Setup Schedule
Tuesday - Saturday

Report Available
1 - 4 days

Reference Range
  Screen Titer
Q Fever IgG Phase I Negative <1:16
Q Fever IgG Phase II Negative <1:16
Q Fever IgM Phase I Negative <1:16
Q Fever IgM Phase II Negative <1:16

Clinical Significance
Caused by infection with rickettsiae agent, Coxiella burnetti, Q Fever is characterized by fever with interstitial pneumonitis. Sixty percent of infected individuals are asymptomatic while other infected individuals may die from complications.

Performing Laboratory
Quest Diagnostics Infectious Disease, Inc.
33608 Ortega Highway, Bldg B-West Wing
San Juan Capistrano, 92675-2042

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.