Casandra
Casandra Test Code QD62789Version 1 (DRAFT)
Performing Lab
Rickettsia (Typhus Fever) Antibodies (IgG, IgM) with Reflex to Titers
Also known as: Weil-Felix, Proteus OX-19, Febrile Agglutinins, Typhus Fever, Proteus OX-2
Clinical Use
Order TestUse
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 murine typhus), R. prowazeki (epidemic typhus), and Brill‑Zinsser disease caused by reactivation of latent R. prowazeki.
Special Instructions
Not provided.
Limitations
Even after infection has been treated, positive results may persist. False‑positive reactions may occur during pregnancy.
Test Details
Methodology
Immunoassay (IIFA)
Biomarkers
R. typhi IgG
AnalyteIgG • Other • Binary (Detected / Not Detected)
R. typhi IgM
AnalyteIgM • Other • Binary (Detected / Not Detected)
Result Turnaround Time
1-4 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
1 mL serum
Minimum Volume
0.2 mL serum
Container
Plastic screw‑cap vial
Causes for Rejection
Gross hemolysis • Grossly lipemic
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 14 days |
| Frozen | 30 day |