Coxiella Burnetii IgG Abs
Test Mnemonic
COXIGG
CPT Codes
- 86638 - QTY (2)
Aliases
- Coxiella Burnetii IgG Phase 1&2
- Q-Fever IgG
- C. burnetii Ab IgG, Phase I and II with Reflex to Titer
Includes
- IgG Phase 1
- IgG Phase 2
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Refrigerated | Separate serum from cells ASAP or within 2 hours of collection and transfer into standard aliquot tube. Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Label specimens plainly as 'acute' and 'convalescent.' |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.4 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Refrigerated | After separation from cells: 2 weeks |
| Frozen | After separation from cells: 1 year (Avoid repeated freeze/thaw cycles) |
| Ambient | After separation from cells: 48 hours |
Days Performed
Mon, Wed, Fri
Turnaround Time
2 - 7 days
Methodology
| Name | Description |
|---|---|
| Semi-Quantitative Indirect Fluorescent Antibody |
Reference Range
Special Info
Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. If either C. Burnetii Abs IgG Phase I and/or Phase II result is indeterminate or positive, then titer(s) will be added at an additional cost. Contaminated, hemolyzed, or severely lipemic specimens are unacceptable. This test is New York DOH approved.
Clinical Info
Useful to confirm infectious agent as C. burnetii (Q-fever) in symptomatic patients. Testing of acute and convalescent sera is recommended. Single phase II IgG titers of 1:256 and greater are considered evidence of C. burnetii infection at some time prior to the date of the serum specimen. Phase I antibody titers of 1:16 and greater are consistent with chronic infection or convalescent phase of Q-fever.