Test Overview
Test Methodology

Indirect Immunofluorescence (IFA)

Test Usage

To aid in the diagnosis of Q Fever (Coxiella burnetii).

Reference Range *

Phase I/Phase II IgG <1:16, Phase I/Phase II IgM: <1:16.

Test Limitations

Low levels of phase II IgG antibody (<1:256) may be considered non-specific.

Test Details
Days Set Up
Monday - Friday
Analytic Time

2 - 5 days

Soft Order Code
MiChart Code
Q Fever Antibody
  • C. burnetii
  • Coxiella Burnetii
  • Coxiella Titer
  • Weil-Felix Agglutinins
  • Febrile Agglutinins
  • Q Fever Ab, IgG and IgM, Serum
  • QF I IgG
  • QF I IgM
  • QF II IgG
  • QF II IgM
  • Q Fever Phase I Ab, IgG
  • Q Fever Phase I Ab, IgM
  • Q Fever Phase II Ab, IgG
  • Q Fever Phase II Ab, IgM
  • Interpretation
Reference Laboratory
Mayo QFP (83149)
Special Testing
Specimen Requirements
Collection Instructions

Collect blood in a red top or SST tube. Centrifuge, aliquot serum into plastic vial and refrigerate.

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum
Additional Information

Test includes Phase I and Phase II results for both IgG and IgM. Q Fever Antibody IgG and Q Fever Antibody IgM are also available individually. Test sent to Mayo Medical Laboratories.

CPT Code
86638 x4
Fee Code
NY State Approved