Table 1.

Diagnostic criteria for FPIES^*

FPIES = Food protein–induced enterocolitis syndrome; IgE = immunoglobulin E; IV = intravenous; FTT = failure to thrive.

^*Adapted from Ref. 4.

^†Use of ondansetron may eliminate or mask some of these minor criteria, so the treating physician may decide that a challenge be considered positive as long as the major criterion was met.