Lab Test

Francisella tularensis Antibodies, IgG and IgM

Tularemia Antibody (Francisella tularensis) , ARUP #2005350, Antrim #83298, EPIC: LAB6029, SOFT: XFTUL

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube, Lavender-top EDTA tube, Light Blue-top Sodium Citrate tube, or Dark Green-top Lithium or Sodium Heparin tube.

Physician Office/Drawsite Specimen Preparation

Centrifuge to separate serum or plasma from cells within two hours of collection. Transfer serum or plasma to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 1.0 mL serum or plasma, refrigerated (2-8°C or 36-46°F). (Min: 0.15 mL)

Rejection Criteria

  • Turbid specimens.
  • Specimens not collected and processed as indicated.


After separation from the cells:
Ambient: 2 days
Refrigerated: 2 weeks
Frozen: 1 year (avoid repeated freeze/thaw cycles)


Monday, Wednesday, Friday.
Results available in 2-7 days.

Reference Range

By report.

Test Methodology

Semi-Quantitative Enzyme-Linked Immunosorbent Assay.


By report.

Clinical Utility

Tularemia is primarily a disease of wild animals. The organism, F. tularensis is commonly found in nature. Many wild and domestic mammals, birds, and common house pets have been infected. The disease often begins with the sudden onset of flu-like symptoms (chills, fever, headache and body aches). Incubation is 2-10 days. A positive assay supports the clinical diagnosis of tularemia. Tularemia agglutinins appear in 10-14 days and peak in 5-10 weeks. A four-fold increase during illness or a single titer greater than 1:160 suggests infection. Titers decrease over years.

CPT Code


Test Codes

ARUP #2005350, Antrim #83298, EPIC: LAB6029, SOFT: XFTUL

Last Updated


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This directory currently reflects information only for specimens collected and/or processed at the
Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.