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HelpTest Code FCASG Casein IgG
Specimen Required
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
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 aliquot 0.5 mL of serum in a plastic vial.
3. Send refrigerate.
Method Name
Enzyme Immunoassay (FEIA)
Reporting Name
Casein IgGSpecimen Type
SerumSpecimen Minimum Volume
See Specimen Required
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 28 days | |
| Frozen | 365 days | ||
| Ambient | 7 days |
Reference Values
Reference ranges have not been established for food-specific IgG tests.
Day(s) Performed
Monday through Friday
Performing Laboratory
Eurofins ViracorTest Classification
This test was developed and its performance characteristics determined by Eurofins Viracor. It has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
86001
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FCASG | Casein IgG | 53829-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| FCASG | Casein IgG | 53829-8 |
Interpretation
The clinical utility of food-specific IgG tests has not been 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. It should be recognized that the presence of food-specific IgG alone cannot be taken as evidence of food allergy and only indicates immunologic sensitization by the food allergen in question. This test should only be ordered by physicians who recognize the limitations of the test.