Allergen, Food, Peanut IgG
Also known as: PEANUT IGG
Use
This test is used to measure the levels of allergen-specific IgG antibodies for peanuts. IgG antibodies are often evaluated in cases of food sensitivities rather than immediate allergic reactions (which involve IgE antibodies). The presence of IgG antibodies to peanuts may indicate past exposure or sensitization to peanut allergens, although the clinical relevance for allergy diagnosis is still a subject of research. It is important to note that IgG testing is not typically used for diagnosing food allergies but rather for evaluating possible immune response to certain foods.
Special Instructions
Not provided.
Limitations
This test is not approved for use in New York State, and samples from individuals within New York cannot be processed due to the lack of state permits. As a Laboratory Developed Test (LDT), it has not been cleared by the FDA, but it is performed in a CLIA certified laboratory. The interpretation of results should consider the absence of FDA clearance and potential variability in clinical correlation of IgG levels with allergenic potential.
Methodology
Immunoassay (Fluorescent Enzyme Immunoassay)
Biomarkers
IgG
Protein
LOINC Codes
- 35542-0 - Peanut IgG-mCnc
Result Turnaround Time
1-8 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.25 mL
Container
ARUP standard transport tube
Collection Instructions
Separate serum from cells ASAP or within 2 hours of collection.
Storage Instructions
Refrigerated.
Causes for Rejection
Hemolyzed, icteric, or lipemic specimens.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |
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