Most children who are classified as having an allergy to beta-lactam antibiotics are not confirmed to have hypersensitivity when formally evaluated.
A new study has found that oral direct drug provocation testing (DPT) eliminated safe classification for the majority of children with suspected beta-lactam allergy, including those with carefully selected mild immediate and delayed reactions.
Direct testing bypasses the skin testing step
Beta-lactam antibiotics (penicillins, cephalosporins, carbapenems, and monobactams) are commonly implicated in suspected hypersensitivity reactions in people. children.
However, many self-reported beta-lactam allergies may instead be a viral rash or side effect of antibiotics.
that sensitive Childhood-acquired NSAIDs can persist for years, which may restrict access to first-line antibiotics and lead to widespread use of alternatives, contributing to antibiotic resistance.
International guidelines have recommended the use of DPT, the administration of the suspected antibiotic to the child under medical supervision without prior skin testing, for children with mild and delayed hypersensitivity reactions.
This approach can simplify evaluation and reduce reliance on skin testing in appropriately selected patients.
What has been less clear is whether the same direct approach is safe in children with mild immediate reactions, and whether evidence from mostly Western cohorts translates to Asian pediatric populations, where data have been more limited.
A group from Singapore is putting this approach to the test
Researchers from the Ministry of Health Holdings and Allergy Service at KK Women’s and Children’s Hospital in Singapore reviewed 395 children who underwent 425 beta-lactam DPTs for suspected beta-lactam hypersensitivity reactions, with or without prior skin testing.
Among the direct oral DPTs diagnostic for the beta-lactam index, 89.3% were successfully passed, allowing children to be declassified.
Of the reactions that occurred during direct oral DPTs, 88.9% were mild skin reactions. Three cases (8.3%) were related to cytokine release syndrome, and one case (2.8%) was related to anaphylaxis. Younger age at the time of the original interaction was the only statistically significant factor associated with passing the direct oral diagnostic DPT.
Direct testing was safe in carefully selected children
The researchers concluded that direct oral DPT was a safe method for eliminating signs of beta-lactam allergy in children with mild immediate and delayed hypersensitivity reactions.
The results support consideration of direct treatment with DPT in carefully selected children with a history of immediate or delayed mild reaction, which may reduce the need for prior skin testing.
However, the researchers caution that this was a retrospective cohort study from Singapore, and the results should not be interpreted as supporting direct challenge in children with severe immediate reactions, previous severe skin adverse reactions or other high-risk history.
However, overall, the study adds important evidence from an Asian pediatric population to the growing literature on risk-stratified beta-lactam sensitivity assessment, and suggests that in appropriately selected children, direct DPT may be a useful approach to reduce signs of unnecessary beta-lactam sensitivity.
reference
Ng Wesi, et al. Evaluation of the diagnostic approach and clinical outcomes in children with suspected beta-lactam allergy. Asian Pak J Allergy Immunol. 2026
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