Days Set Up
Monday - Friday
Analytic Time

1 - 5 days

Soft Order Code

Test Updated:


Febile Agglutinins
Murine Typhus
Weil-Felix Agglutinins
Rickettsia typhi
Typhus Fever Group Antibody

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

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MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Indirect Fluorescent Antibody (IFA)

Test Usage

Antigen specific IgG and IgM titers allow rapid diagnosis of infection by one or more of the typhus fever group of rickettsial agents. This group includes Rickettsia typhi (endemic or maurine typhus) R. prowazeki (epidemic typhus), and Brill-Zinsswe disease caused by reactivation of latent R. prowazeki.

Reference Range

Screen: Not detected. Titer: < 1:64.

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

Specimen Requirements

Collection Offsite

Collect blood in a red top or SST tube. Centrifuge, aliquot serum into plastic vial and refrigerate. EDTA (lavender top), heparinized (green top) or ACD (yellow top) plasma is also acceptable.

Yellow Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.5 mL serum

Billing Information

CPT Code
86757 x2
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.