Rickettsia rickettsii Antibody, IgG

Abbrev Code:ARMISC   
Order Code:LAB4909Order Name:Rickettsia rickettsii Antibody, IgG
Synonyms:Rocky Mountain Spotted Fever Antibody, IgG; Rickettsia, RMSF
Methodology:Indirect immunofluorescence antibody
CPT Codes: 86757 x1
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-3 days.
Special Instructions:Parallel testing is preferred. Label samples as acute or convalescent. Convalescent specimens must be received within 30 days from receipt of the acute specimens.

Collection Instructions

Optimal Volume:2 mL
Minimum\Peds Volume:0.8 mL
Container:Red or gold (gel)
Alternate Containers: Red (no gel)
Causes for Rejection:Contaminated; severely lipemic, hemolyzed.

Processing and Shipping

Specimen Processing:Separate serum from cells within 2 hours of collection. Centrifuge and aliquot 1 mL, 0.3 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:After separation from cells: 48 hours at room temperature; 2 weeks refrigerated; 1 year frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:50369


Reference Range:

Less than 1:64

Negative: No significant level of Rickettsia rickettsii IgG antibody detected.


Low positive: Presence of Rickettsia rickettsii IgG antibody detected suggestive of current or past infection.

1:256 or greater

Positive: Presence of IgG antibody to Rickettsia rickettsii detected, suggestive of recent or current infection.



Use:The best evidence for infection is a significant change on two appropriately timed specimens where both tests are done in the same laboratory at the same time.

Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
[email protected] for TestID: 3671"