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Test Code BABG Babesia microti IgG Antibodies, Serum

Reporting Name

Babesia microti IgG Ab, S

Useful For

An adjunct in the diagnosis of babesiosis

 

Follow-up of documented babesiosis

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum


Specimen 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 a plastic vial.


Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Frozen  14 days

Reference Values

<1:64

Reference values apply to all ages.

Day(s) Performed

Monday through Friday

Test Classification

This test was developed using an analyte specific reagent. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

86753

LOINC Code Information

Test ID Test Order Name Order LOINC Value
BABG Babesia microti IgG Ab, S 16117-4

 

Result ID Test Result Name Result LOINC Value
81128 Babesia microti IgG Ab, S 16117-4

Testing Algorithm

For more information see Acute Tick-Borne Disease Testing Algorithm.

Interpretation

A positive result of an indirect fluorescent antibody test (titer ≥1:64) suggests current or previous infection with Babesia microti. In general, the higher the titer, the more likely it is that the patient has an active infection. Patients with documented infections have usually had titers ranging from 1:320 to 1:2560.

Clinical Reference

1. Spach DH, Liles WC, Campbell GL, Quick RE, Anderson Jr DE, Fritsche TR. Tick-borne diseases in the United States. N Engl J Med. 1993;329(13):936-947

2. Vannier E, Gelfand JA. Babesia species. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett’s Principles and Practice of Infectious Diseases. 9th ed. Elsevier; 2020:3400-3409

Report Available

Same day/1 to 3 days

Method Name

Immunofluorescence Assay (IFA)

Forms

If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.