Phadiatop test was performed in 174 children aged between 1 and 16 years (mean: 9 6/12 years) referred to the hospital because of the bronchial asthma, obstructive bronchitis and perennial or seasonal allergic rhinitis. Positive results were obtained in over 93% of children with atopic allergy. Comparing with PRIST, multiple allergen assay proved more sensitive (93.5%), specific (90%), and accurate (91.4%). The same data for PRIST were: 91.7%, 80.3%, 87.4%, respectively. False negative and false positive results were also less frequent than for PRIST. Therefore, Phadiatop, is considered an appropriate screening in vitro diagnostic test for inhalant allergy which should be performed at the beginning of respiratory tract diagnosis.