A combined IgG and IgM antibody panel is available (refer to 0065100). Differentiate between Chlamydophila species (C. psittaci, C. pneumoniae). Differentiate early IgM response to infection from persistent low-level titer. Because of cross-reactivity, a C. pneumoniae-specific reaction will exhibit titers two-fold or greater than C. trachomatis or C. psittaci serology. Limited value in the diagnosis of most oculogenital (eg, eyes, genitalia) chlamydial infections.
- Patient Preparation
- Plain red or serum separator tube.
- Specimen Preparation
- Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 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
- Unacceptable Conditions
- Contaminated, hemolyzed, or hyperlipemic sera.
- After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
< 1:20 C. pneumoniae IgM.
< 1:20 C. psittaci IgM.
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.
|Component Test Code*||Component Chart Name||LOINC|
|0065101||C. pneumoniae IgM Titer||6914-6|
|0065102||C. trachomatis IgM Titer||6920-3|
|0065103||C. psittaci IgM Titer||6917-9|
|0065131||Chlamydia IgM Panel Interpretation||59464-8|
- Chlamydia IgM Ab
- CT IgM Ab