Potato (f35) IgG

Test Code

38126

CPT Codes
86001<br /> This test is not available for New York patient testing

Preferred Specimen

0.3 mL serum

Minimum Volume

0.15 mL

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 14 days
Frozen: 30 days

Methodology
Immunoassay (IA)

FDA Status
This test was performed using a kit that has not been cleared or approved by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics. This test should not be used for diagnosis without confirmation by other medically established means.

Setup Schedule

Set up: Sun, Wed, Fri; Report available: 3-5 days

Reference Range

<2.0 mcg/mL

Clinical Significance

IgE-assays are the best-studied and most accepted serologic tests for evaluating food allergy status. However, some clinicians also use IgG tests when evaluating individuals for food allergies, sensitivities, or tolerance. Food-specific IgG is generally believed to be a normal physiological response to food exposures. Therefore, many professional organizations, including the American Academy of Allergy, Asthma & Immunology, the Canadian Society of Allergy and Clinical Immunology, and the European Academy of Allergy and Clinical Immunology, recommend against using IgG testing to diagnose food allergies or food intolerances/sensitivities [1-3].

We offer IgG food tests to support providers who use them in their evaluation of patients experiencing adverse reactions to foods.

References:
1. AAAAI. https://www.aaaai.org/conditions-and-treatments/library/allergy-library/IgG-food-test. Accessed November 5, 2019.
2. Carr S, et al. Allergy Asthma Immunol. 2010;8:12.
3. Stapel SO, et al. Allergy. 2008;63:793-769.

Performing Laboratory
Quest Diagnostics Nichols Institute
27027 Tourney Road
Valencia, CA 91355-5386

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.