Immunoassay
Filariasis
FFAG4
Serum
Specimen Type: Serum
Container/Tube: Red or SST
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions:
1. Draw blood in a plain red-top tube(s), serum gel tube(s) is acceptable.
2. Centrifuge and send 0.5 mL serum refrigerated in a plastic vial.
0.5 mL
Gross Hemolysis | Mild OK; Gross Reject |
Gross Lipemia | Mild OK; Gross Reject |
Other reason for rejection | CSF |
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 14 days | |
Frozen | 30 days | ||
Ambient | 7 days |
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.
Wednesday
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
86682
Test Id | Test Order Name | Order LOINC Value |
---|---|---|
FFAG4 | Filaria Antibody (IgG4) | 14208-3 |
Result Id | Test Result Name |
Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
|
---|---|---|
FFAG4 | Filaria Antibody (IgG4) | 14208-3 |