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HelpTest Code BART Bartonella Antibody Panel, IgG and IgM, Serum
Additional Codes
CNE Order Code: Bartonella Ab Panel
Reporting Name
Bartonella Ab Panel, IgG and IgMUseful For
Diagnosis of Bartonella infection, especially in the context of a cat scratch
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into plastic vial.
Specimen Minimum Volume
0.15 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 30 days |
| Frozen | 30 days |
Reference Values
BARTONELLA HENSELAE
IgG: <1:128
IgM: <1:20
BARTONELLA QUINTANA
IgG: <1:128
IgM: <1:20
Day(s) Performed
Monday through Saturday
CPT Code Information
86611 x 4
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| BART | Bartonella Ab Panel, IgG and IgM | 90251-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 15659 | Bart Henselae IgG | In Process |
| 15660 | Bart Henselae IgM | In Process |
| 15661 | Bart Quintana IgG | In Process |
| 15662 | Bart Quintana IgM | In Process |
Interpretation
A positive immunofluorescence assay (IFA) IgM (titer >1:20) suggests a current infection with either Bartonella henselae or Bartonella quintana.
A positive IgG (titer >1:128) suggests a current or previous infection. Increases in IgG titers in serial specimens suggest active infection.
Normal serum specimens usually have an IgG titer of less than 1:128. However, 5% to 10% of healthy controls exhibit a B henselae and B quintana titer of 1:128. Sera from healthy volunteers rarely show titers of 1:256 or greater. IgM titers in normal serum are typically less than 1:20. IgM titers at 1:20 or greater have not been seen in the normal population.
Molecular testing of tissue for Bartonella species nucleic acid is recommended in cases of suspected endocarditis.
Report Available
Same day/1 to 3 daysReject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
Testing Algorithm
For information see Infective Endocarditis: Diagnostic Testing for Identification of Microbiological Etiology.
Method Name
Immunofluorescence Assay (IFA)
Special Instructions
Forms
If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.