|
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Arbovirus Antibodies (IgG, IgM), IFA, Serum
Test Code34980
CPT Codes
86651 (x2), 86652 (x2), 86653 (x2), 86654 (x2)
Includes
California Encephalitis (IgG, IgM), Eastern Equine Encephalitis (IgG, IgM), St. Louis Encephalitis (IgG, IgM), Western Equine Encephalitis (IgG, IgM)
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.2 mL
Transport Temperature
Room temperature
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 • Icteric • Lipemic samples
Methodology
Immunofluorescence Assay (IFA)
Setup Schedule
Monday-Friday Morning
Report available: 3 Days
Report available: 3 Days
Limitations
False-positive results may be produced if the patient has been immunized against yellow fever or if the patient has had previous infections that produce similar, cross-reacting antibodies.
Reference Range
See individual tests
Clinical Significance
Serum is tested against antigens of California Encephalitis (La Crosse), Eastern Equine Encephalitis, St. Louis Encephalitis and Western Equine Encephalitis viruses. IgG titers >=1:16 suggest exposure, while the presence of IgM indicates recent infection. Incidence is seasonal from mid- to late-summer (July-October).
