Reference Interval:
Less than 1:16
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| Interpretive Data: |
A positive result for IgG may suggest current or past infection. Eastern equine encephalitis and western equine encephalitis viruses are both related and will show cross-reactivity. Initial infection by one of these viruses will show a specific rise in titer which is higher than titers against any other viruses of the group. A subsequent infection by another virus within this group, however, will boost the titer against the initial infecting virus (anamnestic response) and make a specific diagnosis difficult.
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| CPT Code(s): |
86652
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Cross References: |
Encephalitis Antibody (Eastern Equine Encephalitis Antibody, IgG by IFA, Serum) |