Parsley, IgE, Serum

Casandra

Casandra Test Code MC90071Version 1 (DRAFT)

Performing Lab

Lab Mayo Clinic LabLab Test ID PSLYCPT Code 86003

Clinical Use

Use

This test is used to establish a diagnosis of an allergy to parsley and to define the allergen responsible for eliciting signs and symptoms. It is also useful for identifying allergens responsible for allergic responses and anaphylactic episodes. This test helps confirm sensitization prior to beginning immunotherapy and investigates the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens.

Special Instructions

For a listing of allergens available for testing, see the Allergens - Immunoglobulin E (IgE) Antibodies PDF. If not ordering electronically, complete, print, and send an Allergen Test Request (T236) with the specimen.

Limitations

Testing for IgE antibodies is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in patients in whom the medical management does not depend upon identification of allergen specificity. Some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum, and test results must be interpreted in the clinical context. False-positive results for IgE antibodies may occur in patients with markedly elevated serum IgE (>2500 kU/L) due to nonspecific binding to allergen solid phases.

Test Details

FDA Approved