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allergy &


Allergies and intolerances are very common and can cause symptoms which range from mild to severe. It is sometimes difficult to distinguish between an allergy and an intolerance which is where our comprehensive range of tests can help.

Allergy Tests

The Allergy Mini Check blood test measures the level of Immunoglobulin E (IgE) in your blood - an antigen which if raised indicates an allergic response.
check_circle 1 test included
invert_colors Blood sample
schedule 2 day turnaround

This blood test includes a comprehensive list of common allergens which are inhaled or eaten in foods.
check_circle 42 tests included
invert_colors Blood sample
schedule 5 day turnaround

This blood test includes a comprehensive list of nuts and seeds that may cause an allergic response.
check_circle 15 tests included
invert_colors Blood sample
schedule 3 day turnaround

This blood test checks for the most common allergens in the UK including peanuts, soya and wheat.
check_circle 17 tests included
invert_colors Blood sample
schedule 4 day turnaround
Intolerance Tests

A blood test for IgG reactions to over 150 foods and drinks, and nutritional therapist support to give you valuable insight into your food intolerances.
check_circle 155 tests included
invert_colors Blood sample
schedule 14 day turnaround

A blood test for IgG reactions to over 150 foods and drinks, plus a personalised low FODMAP, IBS friendly, diet plan, and nutritional therapist support to give you valuable insight into your food intolerances.
check_circle 155 tests included
invert_colors Blood sample
schedule 14 day turnaround
About Allergies & Intolerances

Our range of allergy and food intolerance tests are for people who wish to investigate symptoms which they believe are linked to their diet or their environment. If you are experiencing unexplained symptoms then an allergy or intolerance test may give you the answers you seek. 

It can be difficult to identify whether your symptoms are due to a food allergy or a food intolerance, particularly as the symptoms can be very similar. However, they are very different biological responses and can have different outcomes. An allergy is an IgE (Immunoglobulin E) immune response to certain foods that our bodies identify as an intruder. Part of that response is the release of histamine and other chemicals which cause symptoms such as a runny nose, hives, breathing difficulties, digestive problems and in severe cases anaphylactic shock, which can be fatal. Unlike food intolerances, the response is often immediate, and while you can be intolerant to more than one food, you are less likely to have multiple allergies. This means that it can be easier to identify foods that you are allergic to than foods you are intolerant to. 

It is estimated that perhaps a quarter of us will suffer at some point in our lives, and it doesn't always give the typical runny nose and itchy eyes. Some longstanding unexplained symptoms can actually be caused by hidden allergies.

Common allergens include:

Grass and tree pollens (hay fever)

Dust mites

Animal fur or skin

Certain foods (eg fruits, shellfish and nuts)

Food intolerances are also  incredibly common yet can be very difficult to identify. Symptoms can be single or multiple, can be mild or pronounced and can come on quickly after eating a trigger food or can take up to 72 hours to develop. Some people live with chronic symptoms and don't even realise that a food intolerance could be the reason they feel so unwell. For many, identifying their food intolerance can be life-changing. 

Food intolerances are thought to cause a wide range of symptoms which can range from mild to severe. Most of us would associate digestive symptoms with the food we eat, but how many of us would look to our diets when trying to discover the reason for fatigue, painful joints or a flare-up of eczema? Symptoms of food intolerance can include abdominal pain and cramps, bloating, nausea, diarrhoea, constipation, fatigue, headaches including migraine, joint pain and arthritis, eczema, asthma, IBS, rhinitis and sinusitis and skin rashes and hives. 



Food intolerances aren't always easy to diagnose and manage, especially if more than one food or multiple symptoms are involved. Our Frequently Asked Questions are designed to help you learn more about your condition and to get you the answers you need to manage your food intolerance.

No - food allergies and food intolerance are two separate conditions and are diagnosed using different tests. Food allergies are quite rare and affect only about 2% of the adult population. They are caused by the immune system overreacting to an allergen contained in food by producing an antibody called IgE (Immunoglobulin E) which then attacks the foreign substance. An allergic reaction can vary from being mild to severe and in rare instances can lead to anaphylaxis which is an extreme and potentially life-threatening reaction to a particular allergen. Food intolerance is also caused by the immune system producing antibodies in response to food substances, but in this case it is IgG (Immunoglobulin G) antibodies that are produced. Food intolerance reactions tend to be delayed (whereas allergic reactions are often, but not always, immediate) and are much more common than allergies. Food intolerance can be uncomfortable and sometimes debilitating, but is not life-threatening. As blood tests for allergies and food intolerance test for different antibodies the results from one do not necessarily correspond to the other.
Certain types of proteins that trigger an immune response may be present in more than one food type and could produce a positive result even if you do not eat that particular food. Many foods also contain hidden ingredients which you may consume without realising it.
Not necessarily. The Lorisian Food Intolerance test does not test for Candida or Candida antibodies - you should take a specific Candida antibodies or antigen test if you think you may be suffering from a Candida infection. If your yeast intolerance result is positive you should reduce or eliminate foods which contain yeasts as well as those that can stimulate yeast and Candida overgrowth, such as sugary foods.
Age is not a factor in food intolerances and you can develop them at any age. Even children can be intolerant to different foods. Food intolerances can develop because of poor diet, illness, medication and stress.
We generally recommend that you remove reactive foods from your diet for 3 months before reintroducing them. If you have a particularly strong reaction to certain foods you may wish to eliminate them for longer, or even indefinitely if you begin to feel better as a result. The key to reintroducing foods is to do it gradually and in a controlled manner. You will have the opportunity to discuss the removal and reintroduction of foods with a qualified nutritional therapist once you have taken the food intolerance test and received your results.
The Lorisian Food Intolerance test will detect an immune response to proteins in cow's milk - it will not show whether you are lactose intolerant. If your result is positive to cow's milk you may wish to switch to non-dairy alternatives like soya, coconut, almond or oat milk.
Gluten is a protein present in wheat but also in other foods. The Lorisian Food Intolerance test tests for the gluten protein but also tests separately for the unique proteins found only in wheat - as well as in rye and barley. It is therefore possible for the results to show an intolerance to gluten but no intolerance to these separate wheat, rye or barley proteins. Note that food products can contain wheat and not gluten and vice versa and other food products can be free of both. Make sure that you always know what ingredients food products contain, particularly if you are trying to eliminate a certain protein like gluten from your diet.
Lorisian has ISO9001 and ISO13485 certification and the tests and blood collection devices meet all the requirements of the European Medical Device and In Vitro Diagnostic Device Directives.
We do not offer food intolerance tests to pregnant or breastfeeding mothers. The tests have not been validated for pregnant women and dietary changes at a time when nutrition is so important for mother and child could have serious consequences if not overseen by a qualified professional.
We will only test samples from children under the age of 2 if they have been referred by a qualified medical practitioner who is able to supervise any resulting dietary changes.
Yes - your results will simply reflect your immune response at the time that you take the test. As steroids and immunosuppressants reduce the production of IgG antibodies your immune response and hence result levels may be lower than if you took the test when not taking these medications.
Your test results will only be affected by medication that acts on your immune system - steroids and immunosuppressants for example. Medication that does not affect the production of IgG antibodies (such as anti-histamines) will not influence your test results. Hormone replacement therapy and taking the morning-after pill will similarly not affect your results.
We do not recommend reintroducing any food back into your diet if you know you react to it, without taking proper advice. You may not see a positive test result from these excluded foods, even if you clearly reacted to them in the past, and you should note any such exclusions together with your typical diet ahead of taking the test.
We recommend retesting if you begin reacting to new foods and want to identify and eliminate them from your diet or if you simply want to monitor the foods you may react to regularly. We always advise you to see your GP if you develop new symptoms or existing ones get worse.
Coeliac disease is a lifelong autoimmune disease caused by a reaction to gluten. Gluten intolerance is a less severe reaction to gluten which can be reversed by excluding it from your diet. A blood test for Coeliac disease tests for different antibodies to those which cause gluten intolerance and is followed up with a gut biopsy.


Runny nose and sneezing

Red, itchy eyes

Wheezing and shortness of breath

Raised itchy rash

Selling of the lips, tongue and face

Nausea, vomiting and diarrhoea

Dry flaky and cracked skin.

Food Intolerance

Abdominal pain/cramps







Joint pain/arthritis



Irritable Bowel Syndrome (IBS)


Skin rashes and hives (urticaria)

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