ARUP's Laboratory Test Directory
| 0050091: Bartonella henselae Antibody, IgG by IFA |
| Test Mnemonic: HENS G | |
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Methodology: Indirect Fluorescent Antibody
Performed: Mon, Thu Reported: 1-8 days |
| Specimen Required: | |
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Collect: One 4 mL SST.
Transport: 1 mL serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.15 mL serum at 2-8°C. Remarks: Separate serum from cells ASAP. Acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Please mark specimens plainly as "acute" or "convalescent." Unacceptable Conditions: Severely lipemic, contaminated, or hemolyzed specimens. Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) |
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| Reference Interval: |
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<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. ³1:256 Positive - Presence of IgG antibody to Bartonella henselae detected, suggestive of current or past infection. |
| Interpretive Data: | |
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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.
Please refer to Statement A in the Compliance Statements section in the front of the Laboratory Test Directory. |
| CPT Code(s): | |
| 86611 |