Performance of the PEN-FAST Clinical Decision Rule in Older Adults, Immunocompromised Patients and Delayed Penicillin Allergy.

Rose, Morgan T; Vogrin, Sara; Phillips, Elizabeth J; Trubiano, Jason A · J Allergy Clin Immunol Pract · 2026

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Abstract

The efficacy of PEN-FAST is retained across older adult, immunocompromised and those with a delayed type allergy, with a comparable negative predictive value.