Test Overview

Test Methodology

Enzyme-Linked Immunosorbent Assay (ELISA)

Test Usage

Aiding in the diagnosis of tularemia.

Reference Range*


* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Tularemia antibody titers >=1:20 are of diagnostic significance. However, titers in this range may also indicate previous infection. Antibody begins to appear 2-3 weeks post-onset and generally peaks at approximately 5 weeks into the disease. Based on this antibody production pattern, a second specimen will usually demonstrate a diagnostic four fold rise in titer for patients with active disease.

Test Details

Days Test Performed

Tuesday and Thursday

Analytic Time

3 - 8 days

Soft Order Code


MiChart Code




Tularemia Antibody
Francisella tularensis Antibody

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Laboratory Reference


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Specimen Requirements

Offsite Collection Instructions

Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.


Yellow Top Tube

Normal Volume

0.6 mL serum

Minimum Volume

0.5 mL serum

Additional Information

Test performed by Mayo Clinic Laboratories

Billing Information

Fee Codes

CPT Code

86668 x 2

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