Given the high specificity of the BAT, which complements the high sensitivity of SPT and sIgE, and the practicalities involved in the performance of the BAT, which requires fresh blood processed soon after collection and flow cytometry, we had proposed, in a previous study,11 that the BAT would be most useful as a second step in the diagnostic workup for peanut allergy, performed in patients with equivocal results for SPT and sIgE to clarify the allergic status. This evidence concerns the gene AGXT and peanut allergic reaction.