Establishing the diagnosis of an allergy to mushroom
Defining the allergen responsible for eliciting signs and symptoms
- Responsible for allergic disease and/or anaphylactic episode
- To confirm sensitization prior to beginning immunotherapy
- To investigate the specificity of allergic reactions to insect venom allergens, drugs, or chemical allergens
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.
For 1 allergen: 0.3 mL For more than 1 allergen: (0.05 mL x number of allergens) + 0.25 mL deadspace
Some individuals with clinically insignificant sensitivity to allergens may have measureable levels of IgE antibodies in serum, and results must be interpreted in the clinical context.
False-positive resuts for IgE antibodies may occur in patients with markedly elevated serum IgE (.2,500 kU/L) due to nonspecific binding to allergen solid phases.