Use Tools to Assess Sulfa Antibiotic Allergies

February 2026

A new sulfa allergy assessment tool (SULF-FAST) is spurring questions about managing sulfa allergies for admitted patients.

Patients reporting antibiotic allergies may need to use alternatives with more side effects (quinolones, etc)...or lower efficacy.

Plus data suggest these patients can have more antibiotic resistance, C. difficile infections, hospital readmissions, etc.

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