California Encephalitis Virus Antibody (IgG, IgM), IFA, Serum

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Test Code

CPT Codes
86651 (x2)

Preferred Specimen
1 mL serum

Minimum Volume
0.1 mL

Transport Container
Transport tube

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days

Immunofluorescence Assay (IFA)

Setup Schedule

Report Available
2-5 days

May be negative in early stages of infection.

Reference Range
See Laboratory Report

Clinical Significance
IgG titers ≥1:16 suggest exposure (either past or recent), while the presence of IgM indicated recent infection.

Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042

Last Updated: November 24, 2021

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.