How to Safely Transition a Child from a Specialist Pediatric Allergy Clinic to Adult Immunology Services

Transitioning from paediatric allergy care to adult immunology services is a significant milestone for young people and their families. For many adolescents across the UK, this shift — typically occurring between the ages of 16 and 18 — can feel unsettling, particularly when allergies have been central to daily life management for years. Understanding what the paediatric to adult allergy transition involves, what tests may support it, and how to prepare can make the process far more manageable.

This educational guide is designed to help families navigate this important change with clarity and confidence.

What Is the Paediatric to Adult Allergy Transition?

The paediatric to adult allergy transition refers to the planned, structured process of moving a young person's ongoing allergy monitoring and care from a child-focused clinic to adult immunology or allergy services. This is a recognised milestone within UK healthcare pathways.

In straightforward terms: a child who has been managed for conditions such as food allergy, allergic rhinitis, or asthma under a paediatric framework will reach an age — typically 16–18 — when their care is handed over to adult-oriented services. Preparation, updated testing, and clear communication are at the heart of a safe transition.

Why the Transition Period Matters

The adolescent years are not simply a bridge between childhood and adulthood — they are a period of genuine immunological change. Allergy profiles can shift during puberty, and sensitivities that were significant in childhood may alter, resolve, or occasionally intensify. This makes the transition period an ideal time to reassess baseline allergy markers.

Key reasons the transition requires careful planning include:

• Immunological changes during adolescence may alter how the body responds to allergens
• Self-management skills must be developed, as young adults increasingly manage their own health independently
• Documentation gaps can occur if allergy history is not clearly transferred between services
• Psychological readiness varies widely among young people leaving familiar paediatric environments
• Updated allergy testing may be needed to reflect current immune responses rather than childhood-era results

Practical Insight: Outdated allergy test results may no longer accurately reflect a young person's current immune profile. Arranging updated testing before or during the transition can provide clearer, more current information to support onward care.

How Allergy Profiles Can Change in Adolescence

It is well recognised within UK allergy care guidelines that immune responses are not static. Research published by the British Society for Allergy and Clinical Immunology (BSACI) acknowledges that certain childhood food allergies — particularly to milk and egg — may be outgrown, while others, such as peanut or tree nut allergy, tend to persist.

Equally, new sensitivities can emerge during adolescence, including:

• Latex-food syndrome in young people with certain fruit allergies
• Pollen-food allergy syndrome becoming more pronounced
• Occupational or environmental allergen exposure beginning as young people enter workplaces or higher education settings

This evolving picture underlines why updated allergy screening at the point of transition is considered sound practice.

Paediatric vs Adult Allergy Services: Key Differences

Understanding the structural differences between the two settings can reduce anxiety for young people and their families.

Practical Insight: Many families find the adult setting feels more formal. Encouraging young people to attend their final paediatric appointments independently — or semi-independently — can serve as valuable preparation.

Who Should Consider Updated Allergy Testing During Transition?

Updated allergy blood testing during the transition period may be worth considering for young people who meet one or more of the following criteria. Suitability for testing should be discussed with a GP or appropriate healthcare professional, as individual clinical circumstances vary:

• Have not had allergy blood tests reviewed within the past two to three years
• Have experienced changes in symptoms or reactions in recent months
• Are entering new environments (university, employment, travel) where allergy management may be more complex
• Have a history of multiple or complex sensitivities
• Have had previous allergy tests in early childhood that may no longer reflect their current immune profile

At The Allergy Clinic, our nurse-led service offers a range of allergy blood testing options designed to provide informative, up-to-date baseline data. We provide testing and detailed reporting — a practical step families can take ahead of formal adult service referral.

What Allergy Tests Are Relevant at This Stage?

Specific IgE blood testing remains one of the most commonly used methods for identifying sensitisation to allergens. At the transition stage, the following may be informative:

• Specific IgE panel testing for relevant food allergens (e.g. peanut, tree nuts, milk, egg, wheat, soya)
• Component-resolved diagnostics (CRD) — a more refined form of specific IgE testing that identifies which proteins within an allergen are causing sensitisation, helping to distinguish between cross-reactive and genuine sensitisation
• Total IgE as a broad indicator of atopic tendency
• Inhalant allergen testing where hay fever, pet dander, or occupational allergen exposure is a concern

You can explore our allergy testing options to understand what blood-based screening is available. We provide clear, written reports that can be shared with adult allergy services or a GP to support onward care decisions.

How Often Should Allergy Testing Be Reviewed?

There is no single universal answer, as individual profiles vary. However, as a general educational guide:

• Every 2–3 years is a commonly referenced interval for review in young people with ongoing relevant allergies
• At key life transitions (e.g. moving to secondary school, starting university, entering employment) testing may be particularly timely
• Following a new or unexpected reaction, updated testing can support understanding of current sensitisation status

Our blog on allergy testing frequency contains further educational guidance on when and why testing reviews may be appropriate.

Understanding What Allergy Test Results May Indicate

Allergy blood test results can sometimes feel complex. Here is a brief educational overview:

Important: Blood test results provide information about sensitisation, not confirmed allergy. Results should always be reviewed in the context of a young person's symptom history by an appropriate healthcare professional. Our nurse-led team provides detailed written reports, and we encourage all patients to share results with their GP or relevant clinical team.

Practical Insight: A positive specific IgE result does not automatically mean a young person will react to that food or substance — clinical context is essential. Our written reports clearly outline this for families.

Supporting the Young Person's Wellbeing During Transition

The psychological dimension of allergy transition is often underappreciated. Research from allergy charities including Allergy UK highlights that adolescents with significant allergies can experience heightened anxiety around taking on greater self-management responsibility.

Practical steps families can take include:

• Ensuring the young person understands their allergy history and what their results mean
• Encouraging them to carry relevant documentation (e.g. allergy alert card, emergency medication plan from their clinical team)
• Practising how to communicate their allergy needs in new social or professional settings
• Ensuring emergency medication (prescribed by their clinical team) is always accessible and in date

At our clinic, our nurse-led team is experienced in communicating test results clearly and sensitively — supporting both young people and their families with educational information.

London Context: Accessing Allergy Testing During Transition

For families based in London and across the wider South East, accessing timely allergy blood testing may be available through a private nurse-led clinic as an option for patients and families where NHS waiting times are a concern, depending on individual NHS service pressures at the time.

Private testing does not replace NHS allergy services — and we always encourage families to work within their NHS pathway wherever possible. However, having up-to-date allergy blood test data available can sometimes strengthen and accelerate the onward referral process.

Our clinic is based in London and serves patients across the city and surrounding areas. You can learn more about our allergy clinic approach or contact our team to ask about current availability.

Frequently Asked Questions

1. What age does the paediatric to adult allergy transition typically happen in the UK?

In the UK, the transition from paediatric allergy to adult immunology services typically occurs between the ages of 16 and 18, depending on the NHS trust or service provider. Some transitions are completed gradually over a period of 12 to 24 months, with joint appointments or preparation programmes offered where available.

2. Does allergy always get better as a child gets older?

Not necessarily. Some childhood allergies — particularly milk and egg — may resolve over time, while others, such as peanut and tree nut allergy, more commonly persist into adulthood. New sensitivities can also emerge during adolescence. Updated allergy testing during the transition period can provide a clearer, current picture.

3. Can allergy blood testing be done privately in London before the transition?

Yes. Specific IgE blood testing is available through private nurse-led clinics in London. This can be a practical option for patients and families seeking up-to-date allergy data ahead of or during the transition to adult services. Results can be shared with a GP or adult allergy team.

4. What is component-resolved diagnostics (CRD), and is it relevant at transition?

Component-resolved diagnostics is a more detailed form of specific IgE testing that analyses individual proteins within an allergen. It can help distinguish between cross-reactive sensitisation (often less clinically significant) and genuine sensitisation. It may be particularly informative for young people with peanut, tree nut, or multi-food allergies.

5. Will adult allergy services require new tests to be done?

Adult services may wish to conduct their own baseline assessments. However, having recent allergy blood test results available — including specific IgE panels — can provide a useful starting point and may support the referral and onward care process.

6. Is a nurse-led allergy testing clinic the same as an allergy specialist clinic?

No. A nurse-led allergy testing and screening clinic provides blood testing and detailed written reports. We do not provide diagnosis, prescriptions, or treatment. Results should always be reviewed by an appropriate healthcare professional, such as a GP or NHS allergy service.

7. How should a young person prepare for adult allergy appointments?

It is helpful to compile a clear allergy history, including previous test results, known reactions, and any management plans issued by their paediatric team. Attending appointments independently or semi-independently can also support confidence in self-managing health needs going forward.

8. Can stress or lifestyle changes affect allergy test results in teenagers?

Allergy blood test results reflect immune sensitisation at the time of testing. While stress does not directly alter specific IgE results, lifestyle factors, illness, and physical changes during adolescence can influence the immune system more broadly. This is one reason why reviewing test results periodically during this period is considered good practice.

9. What should families do if they are concerned about gaps in their child's allergy history?

Families should speak with their GP in the first instance to request a summary of their child's allergy history. If updated blood testing would be helpful, a nurse-led clinic such as ours can arrange specific IgE testing with clear written reporting. We do not provide diagnoses or treatment but can support the information-gathering process.

10. Is private allergy testing suitable for all adolescents transitioning from paediatric care?

Private allergy blood testing can be a useful, accessible option for many patients and families. However, it is most appropriate for general allergy screening. Young people with complex, high-risk, or multiple allergies requiring clinical supervision should continue to access NHS allergy services or seek appropriate specialist input through their GP.

A Note on Our Approach

At The Allergy Clinic, we are a nurse-led allergy testing and health screening service. We provide evidence-informed allergy blood testing, detailed written reporting, and clear educational support for patients and their families. We do not offer prescriptions, medical treatment, or diagnostic services.

All content produced by our team is written in line with UK medical editorial best practice, GMC advertising standards, CQC patient communication guidance, and ASA compliance requirements. Our aim is to provide accessible, accurate, and reassuring educational information to support informed health decisions.

Take the Next Step

If your young person is approaching the transition from paediatric allergy care and you would like up-to-date allergy blood testing to support this process, our nurse-led team is here to help. We offer clear, written results that can be shared with your GP or adult allergy service.

There is no pressure — simply reach out to learn what testing may be appropriate, and we will guide you from there. Visit our website to explore our services or get in touch with our team.