# Landmark Study Challenges Infant Peanut Allergy Diagnosis Protocols

One in three infants previously diagnosed with peanut allergies passed medically supervised food challenges.

- **Source:** [Sydney Morning Herald - Latest News](https://www.smh.com.au/rss/feed.xml)
- **Published:** 2026-11-04
- **Topic:** [Business](https://brifing.si/c/business)
- **Original article:** <https://www.smh.com.au/healthcare/one-in-three-babies-with-suspected-peanut-allergies-cleared-of-the-condition-in-landmark-study-20261105-p61aqu.html?ref=rss&utm_medium=rss&utm_source=rss_feed>
- **On Brifing:** https://brifing.si/s/faa49a34-4cef-4749-9046-fb65f40af5b4

## Diagnostic Paradigm Shift

A landmark study led by the Murdoch Children’s Research Institute reveals that 35 percent of infants suspected of having peanut allergies do not actually possess the condition. This research, involving 778 babies across 10 Australian hospitals, challenges the long-standing practice of strictly avoiding allergens based solely on skin-prick or blood test results.

## The ADAPT Program Mechanism

The findings emerged from the ADAPT oral immunotherapy program, which typically treats infants with confirmed allergies using daily peanut powder doses. Researchers discovered that 271 infants passed the oral food challenge, meaning they could safely consume peanuts, effectively removing the allergy label and the necessity for long-term immunotherapy treatment protocols.

## Limitations of Current Testing

Professor Kirsten Perrett emphasizes that historical reactions combined with positive skin-prick or blood tests are insufficient for definitive diagnosis. The study suggests that some infants experience transient allergies that resolve within six months, or that initial reactions do not necessarily indicate an ongoing, persistent allergy requiring strict dietary exclusion for the child.

## Gold Standard Challenges

The research advocates for oral food challenges as the gold-standard diagnostic tool for young children. By consuming increasing amounts of peanut powder under strict medical supervision, clinicians can safely reintroduce the allergen into diets. This approach prevents unnecessary dietary restrictions, provided the child does not exhibit reactions during the supervised clinical assessment.

## Safety and Clinical Oversight

While the results are promising, researchers warn parents against reintroducing allergens without professional oversight. During the study, 65 percent of babies reacted during the challenge, with 12 percent experiencing anaphylaxis. Professional medical supervision remains critical to manage potential life-threatening emergencies, such as breathing difficulties or swelling, during the testing process.

## Resource and Access Barriers

Accessing these resource-intensive oral food challenges remains difficult across Australia. Families often face significant out-of-pocket costs in the private sector because Medicare lacks a dedicated item number for these procedures. Furthermore, public hospital clinics face heavy demand, and the ADAPT program currently maintains limited capacity, primarily focusing on infant patients.

## Future Research Directions

Clinicians are now evaluating the potential to expand the ADAPT program to other common allergens, with cashew allergies being the primary target for future investigation. It remains unclear how these findings will influence the management of food allergies in older children and adults, where diagnostic protocols have traditionally relied on monitoring biomarkers.

## Impact on Clinical Practice

This study fundamentally alters the approach to infant food allergy management by highlighting the prevalence of misdiagnosis. By prioritizing oral food challenges, healthcare providers can ensure infants are not unnecessarily restricted from essential nutrients. This shift emphasizes the importance of evidence-based re-evaluation to improve long-term health outcomes for children with suspected allergies.

## Sources covering this story

- https://www.smh.com.au/healthcare/one-in-three-babies-with-suspected-peanut-allergies-cleared-of-the-condition-in-landmark-study-20261105-p61aqu.html?ref=rss&utm_medium=rss&utm_source=rss_feed — 

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_Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._