Allergen, Food, Onion IgG

Casandra

Casandra Test Code AR56654Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 0097306CPT Code 86001

Allergen, Food, Onion IgG

Also known as: ONION IGG

Clinical Use

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Use

This test measures the IgG antibody response to onion allergens, which can help identify individuals with possible allergic reactions or intolerances to onions. The IgG antibodies are produced by the immune system when exposed to allergens, and elevated levels may indicate previous exposure to onion proteins. However, IgG testing for food allergies is controversial and not universally accepted as a reliable approach for diagnosing food allergies. It may be used as part of a comprehensive approach to allergy assessment in conjunction with other diagnostic methods such as patient history, clinical evaluation, and IgE testing.

Special Instructions

Please review the Specimen Collection and Handling Instructions to ensure adequate volume for allergen testing. The units of measure mcg/mL and mgA/L are interchangeable. Collection should be made in a Serum Separator Tube (SST), and the serum should be separated from the cells as soon as possible or within 2 hours of collection. Transfer 0.5 mL serum to an ARUP standard transport tube. Hemolyzed, icteric, or lipemic specimens are unacceptable.

Limitations

This test has not been cleared or approved by the US FDA and is developed and performance characteristics determined by ARUP Laboratories. It is intended for clinical purposes in a CLIA certified laboratory. IgG testing for food allergies is controversial and not universally accepted as a standalone diagnostic tool. Values less than 2.00 mcg/mL represent absent or undetectable levels of allergen-specific IgG antibody, so results should be interpreted in the context of clinical findings.

Test Details