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.

Being Gluten Free in the Summer: Advice for Coeliacs

May 8, 2023

As the temperature rises, the summer months bring with them a plethora of food options. From barbecues to picnics, ice creams to cocktails, there is something for everyone! But, for those with a gluten intolerance, this time of year can be challenging in many ways.

Gluten is a protein found in wheat, barley, and rye. Being staple products, avoiding gluten can be difficult, especially when eating out. In this Supply Life blog, we will discuss the difficulties of having a gluten intolerance in warmer weather, providing tips and advice for Coeliacs and those just looking to avoid gluten.

Outdoor eating

One of the biggest challenges of being gluten-free in the summer is the prevalence of outdoor eating events. From food festivals to beach barbecues, many of these events offer limited gluten-free options. It can be especially challenging when attending these events with friends or family who do not have a gluten intolerance, as they may not understand the importance of your dietary needs. Additionally, the summer months bring with them an abundance of seasonal treats, such as ice cream and popsicles, which are often packed with gluten.

Fortunately, there are some steps that people with a gluten intolerance can take to make the most of the summer months.

Firstly, it is important to plan ahead when attending outdoor events. Researching the venue and menu beforehand can help identify any gluten-free options.

Secondly, it may be helpful to bring your own food to these events to ensure that there is something safe to eat. This is particularly important if attending a barbecue or potluck, where cross-contamination can occur.

It is also important to communicate your needs to friends and family. Many people with gluten intolerance find that their loved ones are more than happy to accommodate their dietary needs should they simply ask.

Finally, it is essential to always read food labels carefully and to ask questions when dining out.

Do not ignore your intolerance!

Ignoring a gluten intolerance can have serious health consequences. Gluten intolerance, also known as celiac disease, is an autoimmune disorder that affects the small intestine. When someone with celiac disease consumes gluten, their immune system attacks the small intestine lining, leading to a range of symptoms, including abdominal pain, diarrhoea, and fatigue.

Over time, this damage can lead to malabsorption of nutrients, which can cause a variety of health issues, including anaemia, osteoporosis, and infertility. Therefore, avoiding an intolerance or simply eating what is on offer is just not the answer.

Think you may have a gluten intolerance?

For those who suspect they may have a gluten intolerance, investing in a home food intolerance kit from Supply Life is a great option to explore. Here at Supply Life, we offer a simple and easy-to-use home testing kit that can identify food intolerances, including gluten intolerance. The kit is designed to be used at home and requires only a small blood sample, which is sent to a lab for analysis. The results are provided within a few days, along with a comprehensive report that includes dietary recommendations and advice on managing food intolerances.

Head over to our shop to compare the testing options.

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