A Skin Prick Test with Grilled Hazelnut Is a Useful Tool for Predicting Severe Hazelnut Allergy in Routine Practice

The diagnosis of severe hazelnut allergy relies on skin prick tests (SPTs), specific IgE assay and oral challenge. However, SPTs with crude hazelnut or commercial extracts may produce false positives in people with benign, pollen-driven allergy. We therefore studied the predictive value of a SPT based on grilled hazelnut, containing only thermostable allergens.