ARUP's Laboratory Test Directory
| 0065105: Chlamydia Antibody Panel, IgM by IFA |
| Test Mnemonic: V CHLAM M | |
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Methodology: Indirect Fluorescent Antibody
Performed: Mon-Sat Reported: 1-4 days |
| Specimen Required: | |
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Collect: One 4 mL plain red or SST.
Transport: 1 mL serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.15 mL serum at 2-8°C. Remarks: Separate serum from cells ASAP. 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." Unacceptable Conditions: Hyperlipemic, hemolyzed, or contaminated sera. Stability: After separation from cells: Ambient: 2 days; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles) |
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| Reference Interval: |
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< 1:20 C. trachomatis IgM. < 1:20 C. pneumoniae IgM. < 1:20 C. psittaci IgM. |
| Interpretive Data: | |
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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 utilizes C. psittaci, C. pneumoniae, and nine serotypes of C. trachomatis. It does not include the LGV strains of C. trachomatis. Please refer to Statement A in the Compliance Statements section in the front of the Laboratory Test Directory. |
| CPT Code(s): | |
| 86632 C. trachomatis IgM; 86632 C. pneumoniae IgM; 86632 C. psittaci IgM |