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HelpTest ID FEWG4 Egg White IgG4
Method Name
Enzyme Immunoassay (FEIA)
Reporting Name
Egg White IgG4Specimen Type
SerumDraw blood in a plain red-top tube(s), serum gel tube(s) is acceptable. Spin down and send 0.5 mL of serum refrigerated in a plastic vial.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 28 days |
| Frozen | 365 days | |
| Ambient | 7 days |
Reference Values
<0.15 mcg/mL
The reference range listed on the report is the lower limit of quantitation for the assay. The clinical utility of food-specific IgG4 tests has not been clearly established. These tests can be used in special clinical situations to select foods for evaluation by diet elimination and challenge in patients who have food related complaints, and to evaluate food allergic patients prior to food challenges. The presence of food-specific IgG4 alone cannot be taken as evidence of food allergy and only indicated immunologic sensitization to the food allergen in question.
Day(s) Performed
Monday, Wednesday, Friday
Report Available
2 - 3 daysPerforming Laboratory
Viracor-IBT LaboratoriesTest Classification
This test was developed and its performance characteristics determined by Viracor-IBT Laboratories. It has not been cleared or approved by the FDA.CPT Code Information
86001