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

Test Code

QFEV

Quest Code

37071

Alias/See Also

37071

CPT Codes
86638 (x4)

Includes

If Q Fever IgG Phase I is Positive, then Q Fever IgG Phase I Titer will be performed at an additional charge (CPT code(s): 86638).
If Q Fever IgG Phase II is Positive, then Q Fever IgG Phase II Titer will be performed at an additional charge (CPT code(s): 86638).
If Q Fever IgM Phase I is Positive, then Q Fever IgM Phase I Titer will be performed at an additional charge (CPT code(s): 86638).
If Q Fever IgM Phase II is Positive, then Q Fever IgM Phase II Titer will be performed at an additional charge (CPT code(s): 86638).

Preferred Specimen

1 mL serum

Minimum Volume

0.2 mL

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

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

Methodology
Immunofluorescence Assay (IFA)

Setup Schedule

P.M.

Report Available

Reports in 1 to 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 rickettsia agent, Coxiella burnetii, 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 Nichols Institute

33608 Ortega Highway

San Juan Capistrano, CA 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.