Test Directory

This test is useful for establishing the diagnosis of an allergy to passion fruit. In vitro serum testing for IgE antibodies provides an indication of the immune response to allergens that may be associated with allergic disease.

Specimen Type: Serum

Preferred Collection Container: Gold Top, Serum Separator

Alternate Collection Container: Red Top, Plain

Desired Specimen Volume: 0.5 mL

1. Collect a gold top, serum separator tube via venipuncture.

1. Separate serum from cells.
2. Transfer 0.5 mL of serum to a clear aliquot tube (screw cap).

Transport to the laboratory refrigerated. 

See patient report.

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.

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.

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.

• Granadilla
• Maypop