Bartonella quintana Antibody, IgG by IFA
Ordering Recommendation

May assist in confirming suspected Trench fever in patient with typical signs and symptoms and compatible exposure history.

Semi-Quantitative Indirect Fluorescent Antibody
Mon, Thu
1-8 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Serum separator tube. 
Specimen Preparation
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as acute or convalescent. 
Storage/Transport Temperature
Unacceptable Conditions
Contaminated, hemolyzed, or severely lipemic specimens. 
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) 
Reference Interval
< 1:64   Negative - No significant level of Bartonella quintana IgG antibody detected.
1:64-1:128   Equivocal - Questionable presence of Bartonella quintana IgG antibody detected.  Repeat testing in 10-14 days may be helpful.
≥1:256   Positive - Presence of IgG antibody to Bartonella quintana detected, suggestive of current or past infection.
Interpretive Data
A low positive result suggests past exposure or infection, while a high positive result may indicate recent or current infection, but is inconclusive for diagnosis. Seroconversion between acute and convalescent sera is considered strong evidence of recent infection. The best evidence for infection is a significant change on two appropriately timed specimens where both tests are done in the same laboratory at the same time.

Compliance Statement A: For laboratory developed tests using a manufacturer labeled ASR as the reagent providing the specificity of the assay. Analyte Specific Reagent. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, the FDA has determined that such clearance or approval is not necessary.

Hotline History
Component Test Code*Component Chart NameLOINC
0050094Bartonella quintana Antibody, IgG9360-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
  • B. quintana IgG
  • Bartonella quintana IgG