[Prevalence of various pneumo-allergens among the positives in global in vitro diagnostic tests for allergy; possible importance of restricted mixtures].

With in vitro utilization of allergenic extracts' mixes, for 67 positive serums to Phadiatop or Allergy Screen, the prevalence of positivity is increased to moulds (6%), grass pollen allergens (34%), ragweed pollen allergens (13%) and tree pollens (12%). Moreover prevalence is 67% to D. pteronyssinus, 7.5% to Cockroaches and 25% to domestic mammals. At least 20% of positive serums are bisensible and 10% polysensible, which leads to do broader testing.