Rickettsia rickettsii Antibody, IgG
Label Mnemonic: RMSIGG
Epic Lab Code: LAB7539
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Serum
Specimen Instructions:
Acute and convalescent specimens must be labeled as such; parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Please mark specimen plainly as "acute" or "convalescent."
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
Preferred Minimum: 1 mL serum in a red top tube
Rejection Criteria:
Severely lipemic, contaminated, or hemolyzed specimens.
Turn Around Time:
1-4 days upon receipt at reference laboratory
Reference Range:
Less than 1:64: Negative - No significant level of Rickettsia rickettsii Antibody, IgG detected.

1:64 - 1:128: Low Positive - Presence of Rickettsia rickettsii Antibody, IgG detected, suggestive of current or past infection.

1:256 or greater: Positive - Presence of Rickettsia rickettsii Antibody, IgG suggestive of recent or current infection.
Interpretive Data:
The best evidence for current infection is a significant change on two appropriately timed specimens, where both tests are done in the same laboratory at the same time.
Methodology:
Semi-Quantitative Indirect Fluorescent Antibody
CPT Code:
86757