The potential antimicrobial reisistance and economic benefits of clarifying penicillin allergy
236 patients included in a previous study that tested a custom made MDM. They received skin tests and subsequent amoxicillin challenge to gauge the utility of that MDM. Their PCN allergy status was established.
Review computerized pharmacy records and outpt. medical records with prescriptions, clinic visit rates and adverse reactions over a 2 year period (year prior to and year after skin tests).