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
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.
Forms
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.
Special Instructions
Method Name
Enzyme-Linked Immunosorbent Assay (ELISA)
Reporting Name
Q Fever Ab Scrn w/ Titer Reflex, SSpecimen Type
SerumSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 7 days | |
Frozen | 7 days |
Reference Values
Negative
Reference values apply to all ages
Day(s) Performed
Monday, Wednesday, Friday
Report Available
1 to 4 daysPerforming Laboratory

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
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 |