Scale, IgE, Serum

Casandra

Casandra Test Code MC39655Version 1 (DRAFT)

Performing Lab

Lab Mayo Clinic LabLab Test ID SCLECPT Code 86003

Clinical Use

Use

This test is useful for establishing a diagnosis of an allergy to scale and defining the allergen responsible for eliciting signs and symptoms. It helps in identifying allergens responsible for allergic responses and/or anaphylactic episodes. It can confirm sensitization prior to beginning immunotherapy and investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens. IgE antibody testing is not useful in patients previously treated with immunotherapy to determine if residual clinical sensitivity exists or in patients whose medical management does not depend upon understanding allergen specificity.

Special Instructions

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

Limitations

Some individuals with clinically insignificant sensitivity to allergens may still have measurable levels of IgE antibodies in serum, necessitating interpretation in 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. This test is not useful in determining residual clinical sensitivity in patients previously treated with immunotherapy or where medical management does not depend on allergen specificity.

Test Details

FDA Approved