Gluten (F79) IgE (2854X)


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Test Name:
Gluten (F79) IgE (2854X)
Reference Lab: QNI
Test Code:
Shipping Temp: Refrigerated: 14 days
Specimen Type: 0.3 mL serum
TAT: 2 days
CPT Code:
Cost: _
Additional Comments: _
FDA Approved Test: YES_ NO_ LDT_
Medical Director/Pathologist: approved by
Billing Completed by_ Date_ Time_

Test Code
ESOT - 61259N - QNI

Quest Code

CPT Codes

Preferred Specimen
0.3 mL serum

Minimum Volume
0.15 mL

Transport Temperature

Room temperature

Specimen Stability
Room temperature: 14 days
Refrigerated: 14 days
Frozen: 30 days

Immunoassay (IA)

Setup Schedule
A.M. Sets up 6 days a week.

Report Available
Reports in 1 day.

Reference Range
See Laboratory Report

Clinical Significance
This test is an allergen-specific IgE antibody test that quantifies an individual’s IgE response to gluten. It is an in vitro quantitative assay, which is intended to be used in conjunction with other clinical information to aid in the diagnosis of food allergy [1].

While allergen-specific serum IgE testing is considered comparable to skin testing in many instances, both the American Academy of Allergy, Asthma, and Immunology and the American College of Allergy, Asthma, and Immunology recognize that allergen-specific serum IgE testing may be preferred in some clinical situations. These include 1) the presence of widespread skin disease, 2) the recent use of antihistamines or other medications that can affect the results of allergy skin tests, 3) uncooperative patients, and 4) medical history suggesting that allergen skin testing would pose a significant risk for a serious allergic reaction [1].

Food-specific IgE tests are extremely sensitive. However, a positive test result only indicates that a patient is IgE sensitized to the food of concern. Many IgE-sensitized patients do not develop any symptoms when this food is ingested. A diagnosis of food allergy should only be made by a trained medical provider, after conducting a thorough clinical evaluation [2,3]. While food-specific IgE test results may contribute to that evaluation, they cannot replace it. In this regard, detection of food-specific IgE in serum provides evidence of IgE sensitization, but a history of clinical reactivity to the food of concern, is required to make a diagnosis of IgE-mediated food allergy. Moreover, several forms of food hypersensitivity are not associated with the presence of food-specific IgE in serum.

More specific information about this allergen can be found at

1. Bernstein IL, et al. Ann Allergy Asthma Immunol. 2008;100(suppl 3):S1-S148.
2. Sampson HA, et al. J Allergy Clin Immunol. 2014;134:1016-1025.
3. Boyce JA, et al. J Allergy Clin Immunol. 2010;126(6 suppl):S1-S58.

Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.