Rocky Mountain Spotted Fever Antibody IgG

Mnemonic

RICK

Synonym

Rickettsia rickettsii Antibody, IgG

Specimen Collection Requirements

Collect

Serum separator tube

Handling

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.05 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as acute or convalescent.

Preferred Volume

1.0 mL

Minimum Volume

0.5 mL

Transport

Refrigerated

Rejection Criteria

Contaminated, hemolyzed, or severely lipemic specimens.

Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Testing Information

Performed

Mon-Fri

Method

Semi-Quantitative Indirect Fluorescent Antibody

Referral Lab

ARUP (0050369)

Reference Values

Reference Values

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.

CPT Codes

86575

Last Updated: Thursday, January 5, 2017 03:42:29 AM