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HelpTest Code FPNG4 Peanut IgG4
Specimen Required
Draw 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.
Method Name
Enzyme Immunoassay (FEIA)
Reporting Name
Peanut IgG4Specimen Type
SerumSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 28 days | |
| Frozen | 365 days | ||
| Ambient | 7 days |
Reject Due To
| Hemolysis: | NA |
| Thawing: | Cold OK; Warm OK |
| Lipemia: | NA |
| Icterus: | NA |
| Other: | NA |
Reference Values
Reference ranges have not been established for food-specific IgG4 tests. 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 has been studied in response to various oral food immunotherapy treatments but cutoffs have not been established.
Day(s) Performed
Monday, Wednesday, Friday
Report Available
2 to 7 daysPerforming Laboratory
Eurofins ViracorTest Classification
This test was developed and its performance characteristics determined by Viracor Eurofins. It has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
86001