Conditions associated with a false positive reaction:
(1) recent administration of a radioisotope <absolute contraindication>
(2) very high serum IgE levels (> 3,000 kIU/L)
Conditions associated with a false negative reaction:
(1) very low serum IgE levels (< 10 kIU/L) <relative contraindication>
No evidence for an IgE-mediated allergic reaction:
(1) investigation of a reaction that is not IgE-mediated
(2) multiple skin tests that have all been negative
The presence of a mild IgE-mediated allergy that is easily managed:
(1) presence of only minor symptoms
(2) symptoms that are well-managed by avoidance and simple medications
(3) adequate response to immunotherapy
