Test Overview
Test Methodology

Immunofluorescence Assay (IFA)

Test Usage

Aiding the diagnosis of arboviral encephalitis (California [LaCrosse], St. Louis, Eastern equine and Western equine encephalitis).

Reference Range *

IgG: <1:10; IgM <1:10

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Friday May through October
Monday, Wednesday, Friday November through April
Analytic Time

3 - 7 days

Soft Order Code
Reference Laboratory
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in a sterile container. It is preferred not the send the screw capped tubes in the LP collection kit, as they have a tendency to leak. It can also be transferred in Specimen Processing if no other tubes are available. Send to Specimen Processing refrigerated.

Normal Volume
0.7 mL
Minimum Volume
0.7 mL
Additional Information

Test includes California Virus (La Crosse) Encephalitis, St. Louis Encephalitis, Eastern Equine Encephalitis, and Western Equine Encephalitis IgG and IgM Antibodies. Test performed by Mayo Clinic Laboratories

CPT Code
86651 x2, 86653 x2, 86652 x2, 86654 x2
Fee Code
AA528, AA529, AA530, AA531, AA532, AA533, AA534, AA535