Babesia microti Antibodies, IgG/IgM

Babesia microti IgG and IgM Antibodies, Human Babesiosis, Babesiosis IgG & IgM

Test Codes

EPIC: LAB1231972, Beaker: XBMAB, Quest: 34300

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube.

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46°F) (Minimum: 0.1 mL)

Rejection Criteria

Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46°F) (Minimum: 0.1 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 72 hours
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 30 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Quest Diagnostics, Wood Dale, IL.

Performed

Monday – Friday.
Results available in 3 days.

Reference Range

Babesia microti Antibodies IgG:  <1:64
Babesia microti Antibodies IgM:  <1:20

Test Methodology

Immunofluorescence Assay (IFA)

Clinical Utility

Babesia microti Antibodies (IgG, IgM), IFA – Babesia serological testing is used to diagnose infection by the Babesia tick-borne protozoan. Infection may cause hemolytic anemia.

CPT Codes

86753x2

Contacts

Last Updated

11/19/2025