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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Rickettsia Ab IgG Igm Reflex 6419
Test CodeRMSF GM
Alias/See Also
RMSF GM
CPT Codes
86757 x 2
Includes
Rickettsai antibodies IgG and IgM if positive reflex to titers.
Preferred Specimen
1 mL serum
Minimum Volume
1
Instructions
Draw one SST and send serum refrigerated
Transport Container
SST
Transport Temperature
R
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic
Methodology
Immunofluorescence Assay (IFA)
Setup Schedule
Set up: Tues-Sat; Report available: 1-4 days
Limitations
Even after infection has been treated, positive results may persist. False-positive reactions may occur during pregnancy.
Reference Range
| Screen | Titer | |||
| RMSF (IgG) | Not detected | <1:64 | ||
| RMSF (IgM) | Not detected | <1:64 | ||
Clinical Significance
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.
Performing Laboratory
| Quest Diagnostics Nichols Institute |
| 14225 Newbrook Drive |
| Chantilly, VA 20153 |
