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Test ID QFEVR Q Fever Antibody Screen with Titer Reflex, Serum

Ordering Guidance

This test is intended for patients suspected of having Q Fever (Coxiella burnetii) infection. For patients previously diagnosed with Q Fever in whom titers are being monitored, order QFP / Q Fever Antibody, IgG and IgM, Serum.

Specimen Required

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.6 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


If not ordering electronically, complete, print, and send an Infectious Disease Serology Test Request (T916) with the specimen.

Useful For

Screening for exposure to Coxiella burnetii, the causative agent of Q fever


This test should not be used as a screening procedure for the general population.

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
QFP Q Fever Ab, IgG and IgM, S Yes No

Testing Algorithm

If the Q fever serology result is reactive, then Q fever antibody confirmation by indirect immunofluorescence will be performed at an additional charge.


For more information see Infective Endocarditis: Diagnostic Testing for Identification of Microbiological Etiology.

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

Reporting Name

Q Fever Ab Scrn w/ Titer Reflex, S

Specimen Type


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 7 days
  Frozen  7 days

Reference Values


Reference values apply to all ages

Day(s) Performed

Monday, Wednesday, Friday

Report Available

1 to 4 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information


86638 x 4 (if applicable)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
QFEVR Q Fever Ab Scrn w/ Titer Reflex, S 23019-3


Result ID Test Result Name Result LOINC Value
QFEVR Q Fever Ab Scrn w/ Titer Reflex, S 23019-3