A New Combined Test with Flowcytometric Basophil Activation and Determination of Sulfidoleukotrienes Is Useful for in vitro Diagnosis of Hypersensitivity to Aspirin and other Nonsteroidal Anti-Inflammatory Drugs

Abstract

The FAST shows a high percentage of positive reactions, which may reach 60-70% when 4 NSAIDs are tested and even 88% when the test is performed within 1 month of the last clinical drug exposure and reaction. The test has a high specificity above 90%. The addition of sLT determinations yields additional information in a few isolated cases. It is suggested that this test, when properly used, may help avoid some cumbersome and dangerous provocation challenges.