Immunogloblin E‐mediated immediate allergic reactions to dipyrone: value of basophil activation test in the identification of patients

BAT is a useful complement to skin testing for the evaluation of immediate allergic reactions to pyrazolones. Although not optimal, BAT sensitivity was also positive in patients with a negative skin test and it is a reasonable alternative in patients with severe reactions who may develop symptoms after skin testing. The time of performance of the test is critical to obtain a positive response.