Filaria Antibodies, Serum

METHOD NAME : Immunoassay | REPORTING NAME : Filaria Antibody (IgG4)
ALIASES : Filariasis | FFAG4 | SPECIMEN TYPE : Serum
 
 SPECIMEN REQUIRED 
 
Specimen Type : Serum | Container/Tube : Red or SST | Specimen Volume : 0.5 mL
 
Collection Instructions: Draw blood in a plain red-top tube(s), serum gel tube(s) is acceptable. Spin down and send 0.5 mL serum refrigerated in a plastic vial.
 
SPECIMEN MINIMUM VOLUME : 0.5 mL
 
REFERENCE VALUES 
 
Reference Range: <2.50 index
 
 Interpretive Criteria:
 
 <2.50         Negative
>=2.50         Positive
 
This assay detects Filaria IgG4 associated with infections caused by the major filarial parasites, including Dirofilaria immitis, Wuchereria brancrofti, Brugia malayi, and Onchocerca volvulus. Chronic filarial infections manifesting as elephantiasis may not show a significant IgG4 response and cannot be ruled out using this test. Samples containing antibodies to other nematodes, particularly Strongyloides, may cross-react in the assay.