Ordering Recommendation

May assist in confirming a current or past Bartonella henselae infection.

Mnemonic
HENS G
Methodology

Semi-Quantitative Indirect Fluorescent Antibody

Performed

Mon, Thu

Reported

1-8 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

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

Refrigerated.

Unacceptable Conditions

Contaminated, hemolyzed, or severely lipemic specimens.

Remarks
Stability

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 henselae IgG antibody detected.
1:64-1:128  Equivocal - Questionable presence of Bartonella henselae IgG antibody detected.  Repeat testing in 10-14 days may be helpful.
≥1:256  Positive - Presence of IgG antibody to Bartonella henselae 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 significant change on two appropriately timed specimens where both tests are done in the same laboratory at the same time.

Compliance Category

Analyte Specific Reagent (ASR)

Note
Hotline History
N/A
CPT Codes

86611

Components
Component Test Code* Component Chart Name LOINC
0050091 Bartonella henselae Antibody IgG 6954-2
* 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.
Aliases
  • B henselae IgG
  • Bartonella henselae IgG
Bartonella henselae Antibody, IgG by IFA