Rickettsia rickettsii (Rocky Mountain Spotted Fever) Antibodies, IgG & IgM by IFA RRAB

Method(s)	Semi-Quantitative Indirect Fluorescent Antibody
Specimen Required
Collect	One 5 mL gold (SST) top tube.
Transport	1 mL serum at 2-8ºC. (Min: 0.1 mL)
Stability	After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Unacceptable Conditions	Severely lipemic, contaminated, or hemolyzed specimens.
Schedule	Mon-Fri
Billing Code	5010717
CPTCode	86757x2
Notes	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".
Preferred Specimen Collection Device(s)
Gold Cap Tube with SST Gel & Clot Activator
Reference Interval
Test Number Components Reference Interval 0050369 (/Tests/Pub/0050369) Rickettsia rickettsii (Rocky Mountain Spotted Fever) Antibody, IgG 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. 0050372 (/Tests/Pub/0050372) Rickettsia rickettsii (Rocky Mountain Spotted Fever) Antibody, IgM Less than 1:64: Negative - No significant level of Rickettsia rickettsii Antibody, IgM detected. 1:64 or greater: Positive - Presence of Rickettsia rickettsii Antibody, IgM detected, which may indicate a current or recent infection; however, low levels of IgM antibodies may occasionally persist for more than 12 months post-infection.