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Eastern Equine Encephalitis Virus IgG Ab, IFA (Serum)
Test Code25852
CPT Codes
86652
Preferred Specimen
1 mL serum
Minimum Volume
0.1 mL
Transport Container
Plastic screw-cap vial
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Grossly icteric
Methodology
Indirect Immunofluorescence Assay
Setup Schedule
Set up: Mon-Fri; Report available: 2 days
Reference Range
<1:16
Clinical Significance
IgG titers ≥1:16 suggest exposure, while the presence of IgM indicates recent infection. Human infections are seasonal, from mid- to late-summer, occurring from New England to Texas. Minimal cross-reactivity with other Group A arboviruses, i.e., Western Equine Encephalitis virus, occurs.
