Health Vidya

16, 17, 18, 20 Standardized glycerinated allergenic extracts in potencies of 10,000 BAU/mL and 100,000 BAU/mL are indicated for use in diagnosis and immunotherapy of patients presenting symptoms of allergy (hay fever, rhinitis, etc.) to specific grass pollens. Concentrated extracts must be diluted prior to use in intradermal testing and immunotherapy. The selection of allergenic extracts to be used should be based on a thorough and carefully taken history of hypersensitivity, and confirmed by skin testing. 27, 28 10,000 BAU/mL dose form should be used initially for percutaneous testing. If negative, the 100,000 BAU/mL dose can be used.The use of mixed or unrelated antigens for skin testing is not recommended since, in the case of a positive reaction, it does not indicate which component of the mix is responsible for the reaction, while, in the case of a negative reaction, it fails to indicate whether the individual antigens at full concentration would give a positive reaction. Utilization of such mixes for compounding a treatment may result, in the former case, in administering unnecessary antigens and, in the latter case, in the omission of a needed allergen. Allergens to which a patient is extremely sensitive should not be included in treatment mixes with allergens to which there is much less sensitivity, but should be administered separately. This allows individualized and better control of dosage increases, including adjustments in dosage becoming necessary after severe reactions which may occur to the highly reactive allergen. Note: BAU/mL Standardized grass pollens are not interchangeable with any other grass pollen products.