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Order Code CH608
Turnaround Time 24-48 hours
Test Includes

If RMSF IgM is Detected, then RMSF IgM Titer will be
performed at an additional charge (CPT code(s): 86757).

Specimen Requirements
Specimen Source
Transport Container
(Specimen Container)

Serum Separator Tube (SST/Tiger Top)

Preferred Specimens
1 mL serum
Minimum Volume (uL)
0.2 mL
Collection Instructions
(Transport Temperature)
Transport at Room Temperature
Specimen Stability
Temperature Period
Room temperature 7 days
Refrigerated 14 days
Frozen 30 days
Reject Criteria

Gross hemolysis
Grossly lipemic

Test Details
Immunofluorescence Assay (IFA)
Clinical Significance

Rickettsia (RMSF) Antibodies (IgG, IgM) with Reflex to Titers – 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 Ranges

Screen: Not detected
Titer: <1:64