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

Important Note

Sample only has 7 days stability to reach Mayo Laboratories – referring hospital laboratory should contact NUH Laboratory for feasibility.
Do not collect specimen on Fridays through Sundays, eve of public holidays and public holidays.

Additional Codes

Epic Ordering Code LAB3040844
NBS code  
Service code 33159

Reporting Name

Q Fever Ab Scrn w/ Titer Reflex, S

Specimen Type

Serum


Ordering Guidance


 



Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.6 mL Serum

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


National University Hospital-Singapore Note:

NUH Outreach Laboratories:
Specimen Requirements
Submit only one of the following:
Preferred: Yellow Top
Acceptable: Red Top
Processing Requirements
Centrifuge and aliquot serum into a Mayo plastic tube.
Specimen type: Serum
Volume: 0.6 mL
Storage/transport requirements: Refrigerated

Forms

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

Specimen Minimum Volume

Serum: 0.5 mL

Specimen Stability Information

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

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject
Heat-inactivated specimen Reject

Method Name

Enzyme-Linked Immunosorbent Assay (ELISA)

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.

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
QFP Q Fever IgM/IgG, Titer, S No No

Day(s) Performed

Sunday through Friday

Report Available

1 to 4 days
National University Hospital-Singapore Note:

Please note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.

Reference Values

Negative

Reference values apply to all ages

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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.

CPT Code Information

86638

86638 x4 (if appropriate)

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

Secondary ID

616832

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.
National University Hospital-Singapore Additional Information:

Last updated 05/08/2026