Days Set Up
Tuesday, Thursday
Analytic Time

1 - 5 days

MiChart Code
QRMGM
Soft Order Code
QRMGM

Test Updated:

Synonyms

RMSFG
Febrile Agglutinins
Rocky Mountain Spotted Fever
Weil-Felix Agglutinins
Spotted Fever Group Antibody
Rickettsia rickettsii
Tick Borne Disease

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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 any of the spotted fever group of rickettsial agents. This group of agents include R. rickettsii (Rocky Mountain Spotted Fever) and R. akari (rickettsial pox), both seen in the continental United States.

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 Instructions

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.

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

Billing Information

CPT Code
86757 x2
Pro Fee Code
 
Insurance Auth Info
 
LOINC
32999-5 RMSF IgG, 33000-1 RMSF IgM

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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.