Food Intolerance & Homocysteine Testing
Crawley, West Sussex

Over 45% of the population react adversely to foods that they eat, which whilst not life-threatening, can have a massive impact on someone’s quality of work and home life. The way that food can affect our everyday life is often difficult to explain and it is common for people to try and eliminate foods from their diet to help themselves feel better. Often they don’t know which foods to try and eliminate and have to guess. Many people don’t know that identifying food intolerances can be an important element of optimising health and wellbeing.

Food intolerance is a condition with a range of symptoms including gut symptoms, bloating, headaches, migraines, low mood, fatigue, weight gain and skin problems. These symptoms must always be checked out by a Medical Professional. If you have seen a Medical Professional but have not been given a diagnosis for their symptoms then they may be suffering from food intolerance.


A food intolerance can occur when the body has difficulty digesting certain foods. When this occurs over time, large food particles (proteins) may enter the blood stream and this can cause inflammation. When foods and drinks are digested, the proteins within them are broken down into smaller fragments for easy absorption into the body.  Larger fragments can pass through without breaking down, and sometimes the body reacts by attacking them using antibodies called Immunoglobulin G’s (IgG).

A food-specific IgG reaction should not be confused with food allergies, nor other types of food intolerances, which Lorisian do not test for. These include:

  • Enzyme deficiencies e.g. lactose (milk sugar) intolerance
  • Coeliac disease; requiring lifelong avoidance of gluten
  • Chemical sensitivities e.g. histamine, tyramine, sulphites etc

Food intolerance can cause a wide range of disruptive symptoms such as digestive problems, eczema, migraines and headaches, fatigue, depression and low mood, joint pains and sinusitis. It is always recommended that any concerns are discussed with a doctor first, before taking a food intolerance test. This is to fully investigate the potential causes which may include investigations for coeliac disease and/or lactose intolerance and provide the medical follow up required. It is a fact of life, however, that in many cases there is no medical explanation for symptoms such as these.

For example, medically unexplained symptoms or ‘functional symptoms’ where doctors can’t find a problem with the body that might be the cause, account for up to a fifth of all GP consultations in the UK¹.  These include symptoms such as tiredness, chronic fatigue (ME), depression, anxiety, IBS, fibromyalgia, headaches and migraines, skin rashes and joint pains, runny nose and sinusitis.

Many people with these problems will be given the all clear by their doctor and strongly suspect that food is the root cause of their problems. So what options do they have?

  • Do nothing
  • Choose to remove foods from their diet by second guessing
  • Seek support from a dietician or nutritional therapist and try an elimination diet and challenge method; a method which can be long and laborious (it is difficult to determine the exact combination of relevant trigger foods using this method)
  • Take a food intolerance test to identify their food triggers and fast-track their elimination diet

Food intolerance† is a condition, which has been linked to symptoms such as:

  • Abdominal Pain
  • Aches and Pains
  • Acne
  • Bloating
  • Constipation
  • Chronic Fatigue Syndrome
  • Diarrhoea
  • Eczema
  • Fatigue
  • Irritable Bowel Syndrome (IBS)
  • Itching
  • Headaches
  • Hyperactivity
  • Low mood
  • Migraine
  • Nausea
  • Rashes
  • Rhinitis
  • Sinusitis
  • Skin problems
  • Stomach Cramps
  • Tension
  • Tiredness
  • Urticaria
  • Weight loss/Weight Gain
  • Wheezing

Symptoms of food intolerance can take up to 72 hours to appear after eating the trigger food or group of foods.  On average people who suffer from food intolerances usually have around 4 or 5 trigger foods. Many people suffer for years, having formed a coping mechanism to deal with the symptoms but are unable to enjoy a normal work and home life. Lorisian can provide a fast track or starting point for an elimination diet to help you optimise your health and wellbeing.

Do you experience reactions to foods and think they might be caused by an allergy? Do you experience hay fever type symptoms, the cause of which is unknown to you?

Allergies can be difficult to pinpoint and it’s almost impossible to deal with an allergy without identifying precisely what is causing the problem.

The YorkTest Food Allergy Test is a fast and reliable home-to-laboratory allergy testing service. It can pinpoint what you are reacting to, identifying your specific allergic reactions and enabling you to take control.

The YorkTest Food Allergy Test tests for reactions to the following foods:

  • Egg white
  • Milk
  • Cod
  • Salmon
  • Crab
  • Shrimp
  • Meat mix (pork, beef, chicken, lamb)
  • Wheat
  • Rice
  • Soy
  • Potato
  • Peanut
  • Hazelnut
  • Almond
  • Tomato
  • Carrot
  • Orange
  • Strawberry
  • Apple
  • Peach

The YorkTest Allergy Test tests for reactions to the following common environmental allergens:

  • Birch
  • Hazelnut pollen
  • Olive
  • Cypress
  • Ash, European
  • Timothy grass
  • Rye
  • Bermuda grass
  • Bahia grass
  • Common ragweed
  • Mugwort
  • English plantain
  • Cat dander
  • Horse dander
  • Dog dander
  • House dust mites (D. pteronyssinus and D. farinae)
  • Cockroach
  • Cladosporium herbarum

How are your test results presented?

Your allergy test results are presented as a detailed chart that can be handed to your GP or Healthcare Practitioner. The test results are presented in an easy to understand format, indicating the strength of your reactions on a scale of 0-6.

The Allergy Test kit contains all you need to take a small blood sample in the comfort of your own home. Simply return your sample in the pre-paid envelope provided (UK only) to our York laboratory for expert analysis. Your confidential results and additional support material will be posted to you within 10 days.

Note that if you have not been exposed to a particular food or environmental allergen prior to taking the test and/or you are not displaying symptoms, your antibody levels may not be raised, and your result may be negative (no reaction).

If you know that you have a bad reaction to a particular food, then do not attempt to eat that food.

Do not take this test if you are:

  • Under the age of 4
  • Suffering from a blood borne disease such as Hepatitis or HIV
  • Pregnant or breast feeding