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Junior Food Intolerance Test

Junior Food Intolerance Test

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  • ✔️ Tests IgG reactions to 200+ food and drink ingredients
  • ✔️ Identifies potential dietary triggers behind children's symptoms
  • ✔️ Simple finger-prick home collection — no clinic visit needed
  • ✔️ Personalised results report delivered within 7 days
  • ✔️ Includes access to a nutritional therapist consultation

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Is a Food Intolerance Test for Children Worth It?

 

If your child is struggling with unexplained tummy aches, bloating, skin flare-ups, or persistent fatigue, you might be wondering whether their diet is to blame. The food intolerance test for children from yorktest is designed to take some of the guesswork out of that process. Using a simple finger-prick blood sample collected at home, it screens your child's immune response to over 200 food and drink ingredients — giving you a clear, science-backed starting point for dietary investigation. For families already exploring gut-related concerns, you may also find our IBS and Cramps range helpful alongside this test.

Food intolerance is not the same as food allergy. The NHS explains that food intolerances typically cause delayed, non-life-threatening symptoms — such as bloating, diarrhoea, or skin problems — rather than the immediate, potentially severe reactions seen in true allergies. That distinction matters enormously when you're trying to work out what's affecting your child's day-to-day wellbeing.

 

How Does the yorktest Junior Food Intolerance Test Work?

 

The test works by detecting IgG antibodies in your child's blood. IgG antibodies are produced by the immune system in response to specific food proteins. Elevated IgG levels against a particular food may indicate that your child's body is reacting to it, though it's worth noting that IgG testing remains a subject of ongoing scientific discussion and should be used as a guide rather than a definitive diagnosis.

  • A lancet device in the kit is used to take a small finger-prick blood sample from your child's fingertip.
  • Blood is applied to the collection card included in the kit and left to dry.
  • The sample is posted to yorktest's accredited laboratory using the prepaid return envelope.
  • Laboratory scientists analyse IgG antibody reactions across 200+ food and drink ingredients.
  • A personalised results report is produced, typically within 7 days of the lab receiving the sample.
  • Results are delivered digitally, often accompanied by access to a nutritional therapist consultation.

 

Who Should Consider the yorktest Junior Test?

 

This test is aimed at parents who have noticed recurring, unexplained symptoms in their child that don't have an obvious cause. It's particularly relevant if your child's GP has already ruled out more serious conditions such as coeliac disease or IgE-mediated food allergy. It is not a replacement for medical advice — always speak to your GP first if symptoms are severe, worsening, or include signs of anaphylaxis.

  • Children with persistent bloating, wind, or stomach cramps after eating
  • Children experiencing recurring loose stools or constipation without a clear cause
  • Children with unexplained skin conditions such as eczema or rashes
  • Children who seem unusually tired or irritable, particularly after meals

 

How Does the yorktest Junior Test Compare to Other Options?

 

Feature yorktest Junior Food Intolerance Test NHS GP Referral / Elimination Diet
Number of foods tested 200+ food and drink ingredients Targeted — based on clinical suspicion
Sample type Finger-prick blood sample at home Venous blood draw or dietary diary
Turnaround time ~7 days from lab receipt Weeks to months (NHS waiting times vary)
Cost £139.56 Free on NHS (if referred)
Nutritional support included Yes — nutritional therapist consultation Dietitian referral (if available)

 

Is the yorktest Junior Test Clinically Suitable for Your Child?

 

Before ordering any food intolerance test for children, it's sensible to have a conversation with your GP — especially if your child has a known medical condition, takes regular medication, or has previously experienced a severe allergic reaction. The yorktest Junior test is not suitable for diagnosing IgE-mediated food allergy, coeliac disease, or lactose intolerance (which is enzyme-based, not immune-mediated). It should be used as a complementary tool to support dietary investigation, not as a standalone diagnosis. If your child takes any supplements, you might also want to browse our Vitamins and Supplements collection for age-appropriate nutritional support during any dietary adjustment period.

Store the kit at room temperature, away from direct sunlight, and return the sample promptly once collected. Do not freeze the blood sample card.

This product is a diagnostic test kit. Speak to your doctor or pharmacist before using if your child has an underlying medical condition or is taking other medicines.

yorktest Junior Food Intolerance Test specifications
Treatment category Diagnostic / Food intolerance testing
Mechanism of action IgG antibody detection via laboratory immunoassay
Effective for Identifying potential IgG food and drink ingredient reactions in children
Suitable for Children aged 2 and above (parental supervision required)
Active ingredient N/A — diagnostic test kit
Pack size 1 test kit (includes lancet, collection card, prepaid return envelope)
Foods tested 200+ food and drink ingredients
UK classification General sale / OTC diagnostic kit
Preparation Finger-prick blood sample collection card
Route of administration Finger-prick blood sample (home collection)

Specifications of yorktest Junior Food Intolerance Test

 

What Is the yorktest Junior Food Intolerance Test and What Is It Used For?

 

The yorktest Junior Food Intolerance Test is an at-home diagnostic kit that measures your child's IgG antibody response to over 200 food and drink ingredients. It is used by parents who want to identify potential dietary triggers behind their child's recurring, unexplained symptoms — such as bloating, loose stools, skin problems, or low energy. The test is not a treatment in itself; rather, it provides information that can guide dietary changes, ideally with the support of a healthcare professional or registered dietitian.

Food intolerance is distinct from food allergy. The NHS notes that food intolerances are generally not life-threatening but can significantly affect quality of life. This test focuses on IgG-mediated reactions, which are associated with delayed-onset symptoms rather than the immediate responses seen in IgE-mediated allergies. It does not test for coeliac disease, lactose intolerance, or any form of IgE food allergy.

 

What Do You Need to Know Before Using the yorktest Junior Test?

 

This test is not suitable for every child. Read the following carefully before ordering or collecting a sample.

Contraindications and warnings:

  • Do not use this test as a substitute for medical diagnosis — always consult your GP if symptoms are severe or worsening.
  • This test does not diagnose IgE-mediated food allergy; if your child has ever had anaphylaxis, seek urgent medical advice.
  • Not validated for diagnosing coeliac disease — your GP can arrange specific coeliac antibody blood tests on the NHS.
  • Children under 2 years of age: check current yorktest guidance before ordering.
  • Do not collect a sample if your child is unwell with an acute infection, as this may temporarily affect antibody levels.
  • Parental or guardian supervision is required throughout the sample collection process.

Potential interactions:

  • Immunosuppressant medications may affect IgG antibody levels and could influence test results — inform your GP before proceeding.
  • Recent use of oral corticosteroids may also affect immune markers; discuss with your pharmacist if relevant.

 

How Should You Use the yorktest Junior Food Intolerance Test?

 

The sample collection process is straightforward, but it's important to follow the instructions precisely to ensure an accurate result. Incorrect sample collection is the most common reason for a test needing to be repeated.

  1. Wash your child's hands thoroughly with warm water and dry them well — this encourages blood flow to the fingertips.
  2. Use the lancet device provided to make a small, quick prick on the side of your child's fingertip (not the pad).
  3. Gently squeeze the finger to encourage blood flow and apply drops to the collection card circles as directed.
  4. Allow the blood spots to dry completely at room temperature for at least 30 minutes — do not blow on them or use a hairdryer.
  5. Place the dried card in the biohazard bag provided, seal it, and place it inside the prepaid return envelope.
  6. Post the sample as soon as possible — ideally the same day or the following morning.
  7. Register your kit online using the unique barcode on the collection card so yorktest can link your sample to your account.
Indication Age Group Sample Required Frequency
Food intolerance investigation Children aged 2+ Finger-prick blood sample (4 blood spots) One-off test; repeat if clinically indicated

If you're also managing your child's digestive symptoms in the meantime, our Baby and Toddler range includes products that may help support comfort during the waiting period.

 

What Are the Possible Side Effects of the yorktest Junior Test?

 

As a diagnostic test kit rather than a medicine, the yorktest Junior test does not carry the same side effect profile as a drug. However, the finger-prick sample collection can cause minor physical effects, and there are psychological considerations worth being aware of.

Common side effects (related to finger-prick collection):

  • Brief, mild pain or discomfort at the puncture site
  • Small bruise or redness around the prick site
  • Minor bleeding that resolves quickly with gentle pressure

Less common considerations:

  • Anxiety or distress in younger children during sample collection — take your time and reassure your child beforehand
  • Lightheadedness in children who are particularly sensitive to the sight of blood — ensure your child is seated and calm
  • Skin irritation if the plaster provided causes a reaction in children with adhesive sensitivities

If the puncture site becomes red, swollen, or shows signs of infection in the days following collection, contact your GP. This is rare but worth monitoring.

 

How Should You Store the yorktest Junior Food Intolerance Test?

 

Proper storage of the kit before use — and correct handling of the sample after collection — is essential for reliable results.

  • Store the unopened kit at room temperature (15–25°C), away from direct sunlight and moisture.
  • Do not refrigerate or freeze any component of the kit.
  • Keep the kit out of reach of children when not in use (lancets are sharp).
  • Once the blood sample card has been completed and dried, store it in the biohazard bag provided until posting.
  • Do not expose the dried blood spots to extreme heat or humidity before posting.
  • Post the sample promptly — delays in transit can affect sample quality.
  • Check the expiry date on the kit before use; do not use an expired kit.

For families managing broader digestive health concerns alongside this test, our Diarrhoea range offers supportive options while you await your results.

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Frequently Asked Questions

Where can I buy the yorktest Junior Food Intolerance Test online in the UK?

You can order the yorktest Junior Food Intolerance Test directly from Cured Pharmacy, a UK GPhC-registered online pharmacy, with delivery to your door. It is also available from the yorktest website and selected health retailers. Buying from a registered pharmacy means you have access to pharmacist support if you have questions before or after testing.

How does the yorktest Junior Food Intolerance Test work in the body?

The test detects IgG antibodies in your child's blood that have been produced in response to specific food proteins. Elevated IgG levels against a particular ingredient may suggest your child's immune system is reacting to it, which can be associated with delayed digestive or skin symptoms. The results are analysed in yorktest's accredited laboratory and presented in a personalised report.

How do I collect my child's blood sample step by step?

Start by washing your child's hands in warm water to encourage blood flow, then use the lancet provided to make a small prick on the side of a fingertip. Gently squeeze to produce blood drops and apply them to the collection card circles, then allow the card to dry fully for at least 30 minutes before sealing it in the biohazard bag and posting it in the prepaid envelope. Make sure you register the kit online using the barcode before sending.

What age is the yorktest Junior Food Intolerance Test suitable for?

The yorktest Junior test is designed for children, and yorktest generally recommends it for children aged 2 and above. If your child is younger than 2, contact yorktest or speak to your pharmacist before ordering. Parental supervision is required throughout the entire sample collection process regardless of age.

How long does it take to get results from the Junior Food Intolerance Test?

Results are typically available within 7 days of yorktest's laboratory receiving your child's sample. You will receive an email notification when your personalised report is ready to view through your online account. Postal transit time is additional, so factor in 1–2 days for delivery to the lab when estimating your total wait.

Does the yorktest Junior test diagnose food allergy or coeliac disease?

No — this test measures IgG antibody reactions associated with food intolerance, not IgE-mediated food allergy or coeliac disease, which require different NHS diagnostic tests. If you suspect your child has a true food allergy or coeliac disease, speak to your GP who can arrange appropriate testing. Never use this test as a substitute for medical investigation of serious symptoms.

What foods does the Junior Food Intolerance Test check for?

The test screens for IgG reactions to over 200 food and drink ingredients, covering common dietary staples and potential triggers including cow's milk, wheat, eggs, soya, nuts, various fruits, vegetables, and more. The broad panel means you get a wide overview of your child's immune responses rather than testing just a handful of foods. Your results report will highlight which ingredients showed elevated IgG reactions.

What should I do if my child's test results show a food reaction?

If the results indicate elevated IgG reactions to certain foods, yorktest typically provides access to a nutritional therapist consultation to help you interpret the findings and plan a safe elimination approach. Do not make significant dietary changes without professional guidance, particularly in growing children, as unnecessary food restriction can affect nutritional intake. Your GP or a registered dietitian can also help you put the results in clinical context.

Who is eligible to use the yorktest Junior Food Intolerance Test?

The test is suitable for children aged 2 and above whose parents or guardians want to investigate potential food intolerances behind unexplained digestive, skin, or energy-related symptoms. It is not suitable for children with known anaphylaxis risk, suspected coeliac disease, or those on immunosuppressant medication without prior GP advice. Always consult your child's GP before proceeding if there is any clinical uncertainty.

Can I use the yorktest Junior test if my child is already on a restricted diet?

If your child has already eliminated certain foods from their diet, IgG antibody levels to those foods may be lower than expected, which could affect the accuracy of results for those specific ingredients. It is generally recommended that children eat a varied diet including the foods being tested for at least 4–6 weeks before sample collection. Discuss this with yorktest's nutritional team or your GP if you are unsure.

What are the alternatives to the yorktest Junior Food Intolerance Test?

Alternatives include a supervised elimination and reintroduction diet guided by a registered dietitian, an NHS GP referral for targeted allergy or intolerance testing, or other commercial IgG food sensitivity test kits. The NHS does not routinely offer IgG food intolerance testing, so a GP referral would focus on ruling out allergy or coeliac disease rather than broad IgG screening. If your child has ongoing digestive symptoms, our IBS and Cramps range may offer supportive options in the interim.

How accurate is the yorktest Junior Food Intolerance Test?

yorktest uses an ELISA-based immunoassay in an accredited laboratory, which is a recognised method for measuring IgG antibodies. However, it is important to understand that IgG food testing is not universally endorsed by all clinical bodies, and elevated IgG to a food can sometimes reflect normal immune exposure rather than intolerance. Results should be interpreted alongside your child's symptoms and ideally reviewed with a healthcare professional.

How long should you wait before retesting with the yorktest Junior kit?

yorktest generally recommends waiting at least 6 months before retesting, as dietary changes take time to influence IgG antibody levels. Retesting too soon may not reflect meaningful changes in your child's immune response to foods. If your child's symptoms persist or worsen despite dietary adjustments, consult your GP rather than immediately retesting.

What happens if the blood sample is insufficient or the test fails?

If yorktest's laboratory cannot process the sample due to insufficient blood or a collection error, they will typically contact you and arrange a replacement kit. This is why it is important to follow the collection instructions carefully and ensure all four blood spot circles on the card are adequately filled. Warming your child's hands beforehand significantly improves blood flow and sample quality. You can also browse our Baby and Toddler section for other child health products while you wait for your retest kit.

What is the latest research on IgG food intolerance testing in children?

Research into IgG food testing remains an active and debated area of science. Some studies suggest that IgG-guided elimination diets may help reduce symptoms in conditions such as IBS, while major allergy bodies including the British Society for Allergy and Clinical Immunology (BSACI) note that IgG testing is not a validated diagnostic tool for food allergy. For children specifically, the evidence base is limited, which is why results should always be used as a guide alongside professional dietary advice rather than as a standalone diagnosis.

How Should You Use the yorktest Junior Food Intolerance Test?

Using the yorktest Junior kit correctly is essential for getting a reliable result. The entire process takes place at home and is designed to be manageable for parents, but it does require care and patience — particularly when collecting a blood sample from a young child. Follow these steps in order:

What Is the Correct Dose of the yorktest Junior Food Intolerance Test?

This is a diagnostic test kit, not a medicine, so there is no "dose" in the traditional sense. The correct sample requirement is four fully filled blood spot circles on the collection card — insufficient blood is the most common reason for a failed test. Ensure each circle is completely covered with blood before moving to the next.

When Is the Best Time to Use the yorktest Junior Food Intolerance Test?

Collect the sample on a day when your child is well — not during an acute illness or infection, as this can temporarily alter antibody levels and may affect results. Morning is often a practical time, as children tend to be calmer and better hydrated after a night's rest. Ensure your child has been eating a varied diet including the foods being tested for at least 4–6 weeks before collection, as recent elimination of foods can reduce IgG levels to those ingredients and produce misleading results.

How Long Can You Use the yorktest Junior Food Intolerance Test For?

The yorktest Junior test is a one-off diagnostic tool rather than an ongoing treatment. Once you have your results and have made dietary adjustments with professional guidance, yorktest generally recommends waiting at least 6 months before considering a retest, to allow sufficient time for IgG antibody levels to change in response to dietary modifications. If your child's symptoms persist or worsen despite following the dietary guidance provided, consult your GP rather than retesting immediately — ongoing or severe symptoms always warrant medical review.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

What Are the Most Common Side Effects of the yorktest Junior Food Intolerance Test?

Because this is a diagnostic test kit rather than a medicine, the side effects are primarily related to the finger-prick blood collection process rather than any active ingredient. Most children experience only minor, short-lived discomfort. The following are the most commonly reported effects:

  • Brief, sharp pain at the moment of the finger-prick
  • Mild soreness or tenderness at the puncture site lasting a few hours
  • Small amount of bruising around the prick site
  • Minor bleeding that stops quickly with gentle pressure using a clean cloth or plaster

What Are the Less Common Side Effects of the yorktest Junior Test?

A small number of children may experience additional reactions, particularly those who are anxious about needles or blood. These are not dangerous but are worth being aware of before you begin the collection process.

  • Anxiety, distress, or crying during or after the finger-prick — reassure your child beforehand and consider a distraction technique
  • Lightheadedness or feeling faint in children who are sensitive to the sight of blood — ensure your child is seated and calm throughout
  • Skin irritation or redness under the plaster if your child has a sensitivity to adhesives
  • Difficulty producing enough blood from the fingertip, requiring a second prick — warming the hands thoroughly beforehand reduces this risk

What Are the Serious Side Effects of the yorktest Junior Test?

Serious adverse effects from a finger-prick blood collection are extremely rare. However, you should monitor the puncture site in the days following collection. If you notice any of the following, contact your GP promptly:

  • Signs of infection at the puncture site — increasing redness, swelling, warmth, or discharge
  • Prolonged bleeding that does not stop with gentle pressure after 10 minutes
  • Significant bruising or swelling beyond the immediate puncture area

What Should You Do If Your Child Experiences Side Effects?

For minor discomfort at the puncture site, apply gentle pressure with a clean cloth and cover with the plaster provided. If your child is distressed, take a break and try again once they are calm — there is no rush as long as the sample is posted promptly after collection. For any signs of infection or prolonged bleeding, seek medical advice from your GP or call NHS 111. Never attempt to collect a second sample from an already sore or bruised finger.

Can the yorktest Junior Test Interact With Other Medicines?

The test itself does not interact with medicines in the way a drug would. However, certain medications can affect IgG antibody levels in the blood, which may influence test results. Immunosuppressant drugs — such as those used in autoimmune conditions — and oral corticosteroids can reduce IgG production and may lead to falsely low readings for certain foods. If your child takes any regular prescription medication, discuss this with your GP or pharmacist before proceeding with the test to ensure the results will be meaningful.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

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Content last updated: 31 Mar 2025

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