Penicillin Skin Testing in Patients With History of Allergic Reactions to Betalactams

The Comparative Results of Penicillin Testing in Patients With History of Allergic Reactions to Betalactams Between Using In-house Penicillin Test Preparation and Commercial Available Penicillin Testing Kit

This study aims to compare the readings of skin testing results in patients with suspected penicillin allergy between in-house penicillin test preparation and commercial available penicillin testing kit.

The results of skin test with immediate reading will be compared between alkali-treated penicillin G and DAP reagents from Diater

Inclusion Criteria:

1. Patients with history of hypersensitivity reactions to betalactams; penicillin, aminopenicillins, and cephalosporins
2. 15-65 years of age

Exclusion Criteria:

1. On antihistamine/ cannot discontinue antihistamine before the test
2. Having asthma exacerbation
3. Being pregnant
4. Suffering from severe systemic disease/ in bad health