The paper presents a review of current literature concerning the use and conduction of specific nasal challenge tests (SNCT). The authors call attention to the consensus of the German group of 1990 and report of the European Rhinologic Society (ERS) on nasal challenge tests of 2000. They present own experience and point to the unsolved questions: whether SNCT should be one- or two-sided with allergen on blotting paper or from a spray, and what methods of subjective and objective assessment should be applied. The authors call attention also to the unsolved problem of the influence of nasal cycle on the challenge test result. The paper includes the ERS instruction how to conduct nasal challenge test.