What is the test method?

Our food intolerance tests are done using a blood based method covering IgG 1,2,3,4, the blood sample collection process is done via a pin prick to the finger, it takes around 4-5 large droplets.

Why do food cause an IgGantibodies response?

Generally, foods are broken down during digestion into their component parts e.g. amino acids, glycerides etc. These pass harmlessly through the gut as the gut becomes inflamed (bloated) these proteins enter the bloodstream. This is where they are recognized by the immune system as being ‘foreign’. The immune system responds by making IgG antibodies to these foods.

What is the difference between hair and blood based test?

You can't test immune reactions via a hair sample, and in many cases there have been discrepancies in results when parts of the hair have been coloured/bleached. This has led to inconsistency in the sample tested twice. Our IgG 1,2,3,4 blood based testing covers the full range of antibodies responses, this is important, if a particular food elevates any antibodies against it, this means your gut and immune system recognises that food as a threat. This could affect the nutrients absorbed from this particular food and leads to multiple symptoms.

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 insoluble molecules become deposited in tissues within the body, causing chronic inflammation and the subsequent production of symptoms.

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 a number of conditions, both in independent studies and clinical practice. Excellent results have been obtained in patients with migraine, IBS and obesity.

What is the lower age limit for testing?

Supply Life'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 intolerance 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.

What should be considered before testing - Is there any medication that I should avoid when taking a food intolerance 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. Please refer to the medication datasheet in the “Support” section for further details.

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 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.

Do you need to full 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 and 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 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.

Can I upgrade my test to a larger food panel?

You can upgrade for up to a maximum of 4 weeks from the date that your first sample is received.

What are the sample requirements and test turnaround?

A pin-prick blood sample is required. Results are available within 10 working days.

Does the Supply Life test for all subclasses of IgG antibody or only IgG4?

Our process screens for all IgG subclasses 1-4, with the numbers on the test report representing the total IgG concentration for each food extract in the selected panel.

Common Reasons People Take Home Food Intolerance Tests

April 13, 2024

Welcome to Supply Life's latest blog, where we shed light on the many reasons people take home food intolerance tests. As the leading supplier of home food intolerance kits, we understand the importance of identifying potential food sensitivities to improve overall health and well-being.

In this article, we will explore the common motivations behind individuals' decisions to take a home food intolerance test here in the UK.

Digestive Discomfort and Bloating

One of the primary reasons people turn to home food intolerance tests is the presence of persistent digestive discomfort and bloating. Symptoms like gas, abdominal pain, diarrhoea, or constipation can often be triggered by specific foods. Identifying and eliminating these trigger foods can lead to significant relief and improved digestive health.

Unexplained Skin Conditions

Individuals experiencing unexplained skin conditions, such as eczema or hives, might suspect that certain foods are contributing to their skin issues. A home food intolerance test can help pinpoint potential allergens or intolerances, empowering them to make informed dietary changes to manage their skin conditions effectively.

Chronic Fatigue and Low Energy Levels

Feeling constantly fatigued and experiencing low energy levels can be frustrating and impact daily life. Some individuals may find that food intolerances are to blame for their lack of energy. By identifying problem foods, they can tailor their diet to increase energy levels and overall vitality.

Weight Management Challenges

Struggling to manage weight despite efforts to eat healthily and exercise is a common issue. Food intolerances may play a role in weight management difficulties. A home food intolerance test can reveal problem foods that could be hindering weight loss or causing inflammation, assisting individuals in reaching their weight goals.

Frequent Headaches and Migraines

For many people, recurrent headaches and migraines can be debilitating. Certain foods are known to trigger these painful episodes in susceptible individuals. By identifying and avoiding these trigger foods, individuals may experience a reduction in the frequency and intensity of headaches.

Mood Swings and Irritability

Food intolerances can have an impact on mood stability. Some individuals may experience mood swings, irritability, anxiety, or even mild depression due to certain foods they consume. By identifying and removing these trigger foods, they may experience improved emotional well-being.

Joint Pain and Inflammation

Joint pain and inflammation can be linked to food intolerances, particularly in those with conditions like rheumatoid arthritis or inflammatory bowel disease. Taking a home food intolerance test can help identify potential culprits, allowing individuals to adapt their diet to reduce inflammation and alleviate joint pain.

Conclusion

Understanding the common reasons behind seeking a home food intolerance test is essential for individuals looking to improve their health and quality of life. At Supply Life, we are dedicated to providing reliable and accurate home food intolerance kits to empower individuals in their journey towards a healthier and happier life.

By identifying and eliminating problem foods, individuals can take control of their diet and make informed decisions about their well-being. Remember, it's crucial to consult with healthcare professionals for personalised advice and comprehensive guidance on managing food intolerances. Take the first step towards a healthier you today!

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