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Updated: Mar 3, 2026

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
Published on: August 30, 2018
US antibiotic stewardship and penicillin allergy
1Division of Allergy, Department of Otolaryngology Head & Neck Surgery, The Ohio State University Wexner School of Medicine, Columbus, Ohio, USA.
Insights
Many patients with a penicillin allergy on record do not have a true allergy. Allergy history, skin testing, and graded dosing can safely confirm true penicillin allergy, enabling the use of narrower-spectrum antibiotics.
Area of Science:
- Otolaryngology
- Allergy and Immunology
- Infectious Diseases
Background:
- Up to 15% of hospitalized patients have a recorded penicillin allergy.
- Less than 10% of those with a recorded allergy have a true allergy.
Purpose of the Study:
- To improve antibiotic stewardship among otolaryngologists.
- To detail current approaches for evaluating penicillin allergy.
Main Methods:
- Review of current literature on penicillin allergy assessment.
- Detailed allergy history taking.
- Skin testing and graded-dose administration for penicillin-allergic patients.
Main Results:
- A significant number of patients with a recorded penicillin allergy are misdiagnosed.
- Accurate assessment can reclassify patients as non-allergic to penicillin.
Conclusions:
- Comprehensive allergy evaluation can safely identify patients who can receive penicillin.
- This approach supports the use of narrower-spectrum antibiotics.
- Appropriate penicillin use can lead to cost savings.
Purpose Of Review:
The purpose of this review is to improve otolaryngologists' antibiotic stewardship by detailing current approaches to penicillin allergy.
Recent Findings:
Although up to 15% of hospitalized patients in the United States have a penicillin allergy recorded on their charts, fewer than 10% of these have a true penicillin allergy.
Summary:
Using a combination of a detailed allergy history, skin testing and graded-dose administration, many patients whose charts say 'penicillin-allergic' can safely be treated with penicillin and cross-reacting antibiotics. This permits use of narrower-spectrum antibiotics and saves money.
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