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Functional Test Q&A

What is a food allergy?

A food allergy is an immune system response. It is caused when the body mistakes an ingredient in food — usually a protein — as harmful and creates a defence system (antibodies) to fight it. An allergic reaction occurs when the antibodies are battling an “invading” food protein. The most common food allergies are shellfish, nuts, fish, eggs, peanuts, and milk.

What is food intolerance?

Food intolerance is a digestive system response rather than an immune system response. It occurs when something in food irritates a person’s digestive system or when a person is unable to properly digest, or break down, the food. Intolerance to lactose, which is found in milk and other dairy products, is the most common food intolerance.

How are IgG tests useful?

IgG tests provide meaningful insights into your health with easy-to-understand results. Download anytime to share with your healthcare provider or family.  Used the world over, IgG Antibody Intolerance testing, also often referred to as Sensitivity testing, is a great tool for detailed dietary optimisation, and improved health.

View a personalised report of each marker tested as well as detailed information about what your results mean for you.

Take action on your health and wellness. Use your report to help guide your next steps.

Haven’t heard of IgG?

IgG is the predominant immunoglobulin circulating in the blood. IgG antibodies are produced when faced with a foreign threat. Sometimes, they malfunction, treating harmless substances as a threat. The IgG food allergy test offers a useful tool for detecting the foods causing this response. The results are patient specific and provide an easy, precise and effective starting point for dietary manipulation.


Although all pages that provide health information have been written,  reviewed and approved by TestoChecker itself, or health professionals unless specified, the information contained herein is not intended to replace the medical advice of your doctor or health care provider.