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Essential Intolerance Test

Essential Intolerance Test

Regular price £139.00
Regular priceSale price £139.00 £169.00
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Tax included. Free shipping.
Bundle
  • Tests 125 key items, including Egg, Dairy, Meat, Wheat & Fish
  • Lab results ready in just 5 business days
  • CE & UKCA-approved collection kit included
  • Free shipping and pre-paid return

If you experience symptoms such as bloating, IBS, or headaches, this test is a great first step towards better understanding your body.

Shipping & Returns

  • Same day dispatch on orders placed by midday
  • 14-day cancellation period if you change your mind
  • Easy-to-use test kit, no need to send sample.

What's included?

  • 1 Blood collection tube
  • 1 Sample transport tube
  • 3 Alcohol swabs (CE-certified)
  • 3 Retractable lancets (CE-certified)
  • 3 Plasters (CE-certified)
  • 3 Sample labels
  • 1 Instructions for use
  • 1 Pre-paid return envelope
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Description

Take charge of your health with our Essential Intolerance Test, designed to screen for 125 common food intolerance IgG reactions. Using advanced microarray technology, this test delivers accurate insights into your body’s reactions, helping you make informed choices to manage symptoms like bloating, IBS or headaches.

Why Choose the Essential Intolerance Test?

  • Comprehensive Testing: Screens for 125 items, including Wheat, Dairy, Egg, Meat, Fish, and Vegetables.
  • Advanced Technology: Using advanced CE marked, microarray IVD test for greater sensitivity and smaller blood samples than traditional ELISA methods.
  • Fast Turnaround: Receive your detailed traffic-light report in 5 business days.
  • Certified & Convenient: CE & UKCA-approved collection kit, shipped free with a pre-paid return envelope.
  • Reliable Processing: Each test is analysed in duplicate with internal controls for exceptional accuracy.

What’s in the Kit?

  • 1 Blood collection tube
  • 1 Sample transport tube
  • 3 Alcohol swabs (CE-certified)
  • 3 Retractable lancets (CE-certified)
  • 3 Plasters (CE-certified)
  • 3 Sample labels
  • 1 Instructions for use
  • 1 Pre-paid return envelope

Shipping Details

  • Quick Dispatch: Orders placed before 12 PM are shipped the same day; orders after 12 PM are sent the next business day.
  • Free Tracked Delivery: Kits are sent via Royal Mail’s 48-hour tracked service for reliability and peace of mind.

Uncover the root of your symptoms and take the first step toward better health with our Essential Intolerance Test. Order your kit today!

Symptoms

Discovering potential food intolerances can help address common symptoms, such as:

  • Bloating
  • Nausea
  • Stomach cramps
  • Loose stools

By identifying triggers, you can adjust your diet, eliminate problematic ingredients, or seek further medical investigation.

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How It Works

  1. Order Your Test: Select your kit online, complete secure payment, and receive your collection kit via Royal Mail’s tracked 48-hour delivery service.
  2. Collect Your Sample: Use the easy-to-follow instructions to take a small blood sample. The included tools ensure a simple, safe process.
  3. Return Your Sample: Complete the patient form and send your sample back in the pre-paid envelope.
  4. Receive Your Results: Within 5 business days, access a detailed, easy-to-read report identifying your potential food intolerances.
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Example Report

Within 5 business days, access a detailed, easy-to-read report identifying your potential food intolerances.

View full example report
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Items Tested

DAIRY

  • Egg White
  • Egg Yolk
  • Milk (Cow)
  • Milk (Goat)
  • Milk (Sheep)

FISH / SEAFOOD

  • Cod
  • Crab
  • Haddock
  • Herring
  • Lobster
  • Mackerel
  • Mussel
  • Oyster
  • Plaice
  • Salmon
  • Scallop
  • Shrimp / Prawn
  • Sole
  • Swordfish
  • Trout
  • Tuna
  • Turbot

FRUIT

  • Apple
  • Apricot
  • Avocado
  • Banana
  • Blackberry
  • Blackcurrant
  • Cherry
  • Cranberry
  • Grape (Black/Red/White)
  • Grapefruit
  • Kiwi
  • Lemon
  • Lime
  • Melon (Galia / Honeydew)
  • Nectarine
  • Olive
  • Orange
  • Peach
  • Pear
  • Pineapple
  • Plum
  • Raspberry
  • Strawberry

GRAINS

  • Barley
  • Buckwheat
  • Corn (Maize)
  • Durum Wheat
  • Gliadin
  • Millet
  • Oat
  • Rice
  • Rye
  • Wheat
  • Wheat Bran

HERBS & SPICES

  • Basil
  • Chilli (Red)
  • Cinnamon
  • Clove
  • Coriander (Leaf)
  • Cumin
  • Dill
  • Garlic
  • Ginger
  • Hops
  • Mint
  • Mustard Seed
  • Nutmeg
  • Parsley
  • Peppercorn (Black/White)
  • Sage
  • Thyme
  • Vanilla

MEAT

  • Beef
  • Chicken
  • Duck
  • Lamb
  • Pork
  • Turkey
  • Veal
  • Venison

MISC

  • Carob
  • Cocoa Bean
  • Coffee
  • Mushroom
  • Tea (Black)
  • Tea (Green)
  • Yeast (Baker’s)
  • Yeast (Brewer’s)

NUTS / SEEDS

  • Almond
  • Brazil Nut
  • Cashew Nut
  • Coconut
  • Hazelnut
  • Peanut
  • Pistachio
  • Rapeseed
  • Sesame Seed
  • Sunflower Seed
  • Walnut

VEGETABLES

  • Asparagus
  • Aubergine
  • Bean (Green)
  • Bean (Red Kidney)
  • Bean (White Haricot)
  • Beetroot
  • Broccoli
  • Brussels Sprout
  • Cabbage (Savoy / White)
  • Carrot
  • Cauliflower
  • Celery
  • Chicory
  • Cucumber
  • Leek
  • Lentil
  • Lettuce
  • Onion
  • Pea
  • Pepper (Green / Red / Yellow)
  • Potato
  • Soya Bean
  • Spinach
  • Tomato

FAQs

Can I take the test if I am pregnant?

A food sensitivity test is not recommended during pregnancy as the immune system is suppressed. However, 4-6 weeks after giving birth should be ok.

Do high IgG antibody levels cause symptoms?

When a food causes the body to produce high levels of IgG then these antibodies combine with the protein in the food to form an ‘antigen-antibody complex’. These complexes are usually eliminated by other cells in the immune system. However, if the immune system is overloaded, these complexes become deposited in tissues within the body, causing chronic inflammation and the subsequent production of symptoms.

Do I have to fill the microvette all the way to the white line?

Although it is advisable to completely fill the tube, a half-filled microvette tube should be enough to run the test. If there are any problems with a sample the lab will let the customer know. However, if you are ordering two tests, we can test from one sample if you provide a full microvette.

Do you need to reintroduce foods before taking the test?

In general, we recommend that you follow your normal diet, so that the test will reflect what you usually eat. If you are avoiding a food because you suspect or have a confirmed diagnosis of a food allergy, then you should continue to avoid that food. However, if you have specifically avoided a food for more than three months e.g., cow's milk, which used to be part of your normal diet and you would like it tested, we would recommend it is reintroduced. The recommendations are to reintroduce the food for 1 week eating a normal portion of that food at least once daily before taking your blood sample. If symptoms occur once the food is re-introduced, we recommend that you discontinue that food and conclude you are still intolerant to it.

Do you need to store the blood in the fridge if not sending the same day?

Yes, it does need to be stored in the fridge with the lid secured if not sending on the same day.

How does the test work?

Food extracts are 'printed' onto nitrocellulose 'pads'™ on a glass microscope slide, together with calibration standards and controls. A blood sample provided by the patient is diluted and dispensed onto each printed microarray. Food IgG antibodies, if present, bind to the food extracts and the results are measured by a high-resolution scanner, before being calibrated against the standards using the FoodPrint reporting software to give quantitative results. This software then produces a tailor-made printout of the final food IgG antibody result for each food on the requested food panel.

Is it possible to have high IgG levels and not experience symptoms?

Yes, some people do have high IgG levels to certain foods but do not have any symptoms at all. This is most likely due to their immune system being extremely efficient at clearing away the antigen-antibody complexes before they have chance to be deposited in the tissues and cause a problem.

It is true that certain common foods are more likely to show a positive result e.g., wheat, dairy, soya. The reason for this is that these foods are consumed on a regular basis in our diet and along with digestive issues this can increase the likelihood that the body may react to them. While an elimination diet will always be the gold standard, the benefit of doing a food sensitivity test is that it will be able to quickly show which foods eaten on a regular basis are a potential problem. In addition, the tests can highlight more unusual foods which a person may not have considered removing from their diet.

Is there any medication that I should avoid when taking a food sensitivity test, due to its potential effects upon the results?

Customers should avoid the use of immunosuppressant medication if possible if performing these tests, as they may have an impact upon the results. For more information on medications that might affect food sensitivity test results, please contact us onhello@cnslab.co.uk

What is an IgG?

IgG stands for Immunoglobulin (type G). Immunoglobulins are a class of proteins that function as antibodies produced by the immune system in response to foreign bodies entering the body. There are several different types of immunoglobulins with IgA, IgE, IgG, IgM being the most well-known.

What is the lower age limit for testing?

CNSLab’s existing policy for a lower age limit on testing for IgG food antibodies is that we do not recommend testing on children under the age of 2 years. We base this on the European Society for Paediatric Gastroenterology, Hepatology, and Nutrition Guidelines for the Diagnosis of Coeliac Disease 2012, which states that there is a possibility of false negative results occurring in infants younger than 2 years of age. This related to the fact that the infant gut is more permeable than that of an adult coupled with immature mucosal immunity that is still in the learning and development stage. We have used this criterion as antibody measurements in Coeliac Disease are comparable to food IgG measurements used in our food sensitivity tests. However, we are aware that there are in fact no published guidelines that specifically indicate a minimum age for testing for such IgG antibodies, for example the guidelines for testing for coeliac antibodies indicate that such testing can be performed any time after the introduction of gluten into the diet. Therefore, where such requests are received from a statutory regulated professional the decision of when and what tests to perform will remain the responsibility of the requesting clinician.

Why do foods cause an IgG response?

Generally, foods are broken down during digestion into their component parts e.g., amino acids, glycerides etc. These pass harmlessly through the gut into the bloodstream. However, occasionally small fragments of partially digested or undigested foods can pass through the gut wall into the bloodstream where they are recognised by the immune system as being ‘foreign’. The immune system responds by making IgG antibodies to these foods.

Why test for IgG antibodies to foods?

The efficacy of a diet based on the measurement of IgG antibodies specific for food components has been demonstrated in several conditions, both in independent studies and clinical practice. Excellent results have been obtained in patients with migraine, IBS, and obesity.