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Methodology: Indirect Fluorescent Antibody (IFA)
Edit Date: 10/29/2010
Components: Western Equine Encephalitis IgM Antibodies / Eastern Equine Encephalitis IgM Antibodies / St Louis Encephalitis IgM Antibodies / Calif-La Crosse Virus Encephalitis IgM Antibodies
Performed: Wednesday, Friday
Released: 48 hours after setup at PeaceHealth Laboratories’ reference lab.
CPT Code: 86651-90 / 86652-90 / 86653-90 / 86654-90
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST).
Handling: Centrifuge and separate serum into a plastic vial. Label tube as “acute” or “convalescent.” Refrigerate.
Stability: 48 hours ambient, 7 days refrigerated, or 2 months frozen. Avoid repeated freeze/thaw cycles.
Standard Volume: 1 mL serum.
Minimum Volume: 200 µL serum.
Transport: Refrigerated.
Comments: Paired testing of acute and convalescent specimens is recommended.

Aid in the diagnosis of suspected arboviral encephalitis. IgM class antibody is detectable within 1 to 3 weeks of onset, peaking and rapidly declining within 3 months.

Reference Range:
< 1:16 titer

PeaceHealth Laboratories