Filaria Antibody (IgG4)

Test Code

CPT Codes

Preferred Specimen
0.2 mL serum collected in a red-top tube (no gel)

Minimum Volume
0.1 mL

Transport Container
Plastic screw-cap vial

Transport Temperature
Room temperature

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

Enzyme Linked Immunosorbent Assay (ELISA)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Wed a.m.; Report available: 2-8 days

Reference Range


Clinical Significance
This assay detects Filaria IgG4 subclass antibody to enhance specificity without sacrifice of sensitivity. It can identify patients with Filarial infections caused by D. immitis, W. bancrofti, B. malayi and O. volvulus. Chronic infections manifesting as elephantiasis may not result in a significant IgG4 antibody response and cannot be ruled out by this test.

Performing Laboratory
Quest Diagnostics Infectious Disease, Inc.
33608 Ortega Highway, Bldg B-West Wing
San Juan Capistrano, CA 92675-2042

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.