Days Set Up
Monday - Friday
Analytic Time

1 - 4 days

Soft Order Code

Test Updated:


Proteus OX-K
Typhoid O and H
Proteus OX-2
Proteus OX-19
Brucella Antibody
Weil-Felix Agglutinins
Widal Agglutinins
Salmonella O and H Antibody
Rickettsia typhi
Rocky Mountain Spotted Fever
Rickettsia rickettsii
Typhus Fever Group Antibody
Murine Typhus

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

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

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology


Test Usage

Screening tests to identify agglutinins in sera of patients suspected of having typhoid or paratyphoid fevers when the organism is difficult to culture.

Reference Range

Salmonella Antibodies: Negative; Brucella Antibodies (IgG, IgM): <0.80; Rickettsia (RMSF) Antibodies (IgG, IgM): Negative; Rickettsia (Typhus Fever) Antibodies (IgG, IgM): Negative.

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

Specimen Requirements

Collection Onsite

Collect specimen in a red top or SST tube.

Collection Offsite

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

Yellow Top Tube
Normal Volume
3 mL serum
Minimum Volume
0.8 mL serum

Billing Information

CPT Code
86622 x2, 86757 x4, 86768 x5
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.