ARUP's Laboratory Test Directory

Chlamydia Antibody Panel, IgG by IFA : 0065139
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Additional Technical Information
  


Mnemonic: CHLAM G

Methodology: Semi-Quantitative Indirect Fluorescent Antibody
Performed: Mon-Sat
Reported: 1-3 days
Specimen Required: Collect: Plain red or serum separator tube.

Specimen Preparation: Separate serum from cells ASAP or within 2 hours of collection. Transfer1 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 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.

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Contaminated, hemolyzed, or hyperlipemic sera.

Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Reference Interval:
< 1:64 C. trachomatis IgG.
< 1:64 C. pneumoniae IgG.
< 1:64 C. psittaci IgG.
Interpretive Data: The Chlamydia antibody test contains both species- and genus-specific antigens, and serological cross-reactions may be seen in both acute and convalescent samples (less than 1:128). A C. pneumoniae-specific reaction will exhibit titers twofold or greater than titers observed with C. trachomatis or C. psittaci serology. Any IgG titer may indicate past exposure to that particular species. IgG titers in recently infected individuals are typically greater than or equal to 1:512.

The Chlamydia microimmunofluorescent assay slides utilize C. psittaci, C. pneumoniae, and nine serotypes of C. trachomatis. The LGV strains of C. trachomatis are not included in this assay.

See Compliance Statement A: www.aruplab.com/CS
Note: In adult populations, the prevalence of antibody titers indicative of exposure to the organism ranges from 50-78%.
CPT Code(s): 86631 x3