If the result of the LTT is positive, i.e. it was proved specific cells on anallergen, this does not mean yet that topically an activity of the immunesystem takes place against it. Thus will be positive of the LTT of a birch pollen allergy sufferer also in autumn, although in autumn no birch pollens are in the air. He has the allergy and with it the specific commemorative cells on birch pollen. However, his immune system topically is not occupied with it, there occurs no cytokine distribution and with it no system broad reaction to birch pollen.
In the spring when birch pollens are in the air his immune system will argue with it again and produce accordingly cytokine. This cytokin production specific on an allergen is grasped about the Effektorzellstatus. Over here the statement can be met whether and how strongly itself the body with an allergen must put apart.