Aeroallergen selection for skin prick testing and the interpretation of results need to be in line with allergenic sources of a specific geographic area. To identify aeroallergens for a skin test panel for the specific geographical area of Istanbul in a multidisciplinary approach based on aerobiological parameters, cross-reactivity patterns and clinical symptoms. Aerobiological parameters, cross reactivity patterns and the European Standard Skin Prick Test Panel determined allergen selection. Atopic adult patients (n = 60) compiled a questionnaire and were skin prick tested with 29 aeroallergens. Aerobiological sampling followed the requirements of the European Aerobiology Society. Results were statistically analyzed. 65% of patients had positive skin reactions. Sensitization to at least one grass allergen was 30%. Key grass allergens were timothy grass (Phleum pratense L.) 25.8% and Johnson grass (Sorghum halepense (L.) Pers.) 22.6%; correlations between grass-sensitizations were significant at p (minor) 0.01 and so was the correlation of Pooideae sensitization with symptoms and medication. Sensitization to at least one woody plant was 23%; to ash (Fraxinus excelsior L.) 8.1%; hazelnut (Corylus avellana L.), olive (Olea europaea L.) and mulberry (Morus alba L.) 6.5%; juniper (Juniperus ashei J.Buchholz) 4.8%. Correlations between Fagales allergen sensitizations were significant. Sensitization to at least one weed was 22%, sensitization to dock (Rumex crispus L.) 12.9%, ragweed (Ambrosia artemisiifolia L.), and mugwort (Artemisia vulgaris L.) 4.8%. Sensitization rates correlated significantly with the length of the Main Pollen Season. The European Standard Panel is suitable for the geographical area of Greater Istanbul, if it comprises Johnson grass and ash. Ragweed has become clinically relevant in this region. Mulberry and dock were exclusively associated to polysensitized individuals suggesting pan-allergen involvement.
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