Apple IgG
Use
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.
Special Instructions
This test is not FDA approved and is only suitable for special clinical situations under the guidance of knowledgeable physicians.
Limitations
The presence of food-specific IgG alone cannot be taken as evidence of food allergy. The reference ranges for food-specific IgG tests have not been established, and these tests should not be used in isolation to diagnose food allergies.
Methodology
Immunoassay (FEIA)
Biomarkers
LOINC Codes
- 60349-8
- 60349-8
Result Turnaround Time
5-7 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.5 mL
Container
Red Top
Collection Instructions
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.
Causes for Rejection
Thawing: Warm OK; Cold OK
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 28 days |
| Frozen | 365 days |