Food Ingredients

Food intolerances / Food Allergy testing
IgG / IgA / IgE

IgG (immunoglobulin G):

IgG is a delay reaction to food. The foods that cause these delayed reactions are often hard to diagnose because of the time between consumption and the physical reaction. Generally, an IgG reaction occurs hours to days after exposure to these food antigens.. The IgG food allergy test offers a useful tool for detecting the foods causing this response.

When doing an IgG test, it is recommended to eat a large variety of foods in the two weeks prior to testing. Include as many of the foods that are being tested in the specific allergy panel you have chosen. Be aware that if foods are not included in the diet during this time, false negative results may be obtained, as recent exposure to these foods may be required for antibodies to be present in the blood.

It is recommended that IgG allergy testing is only performed for infants greater than 18 months of age.

IgA antibodies:

 are produced in the greatest quantity in a day. This is one of the most important antibodies as it is the bodies’ first line of defence against viruses and bacteria. Testing for IgA antibodies against specific foods may be raised when the lining of the intestinal tract or the mucous membrane become inflamed or damaged. Elevated IgA to specific foods can be a sign of damage to the mucous membranes in the gut. Individuals with Crohn’s disease or ulcerative colitis, or even those with suspected leaky gut may benefit from testing IgA food reactions. 

IgE Allergy Panel: 

The IgE food antibody panel is a food allergy test which analyses serum levels of IgE antibodies for 27 foods, as well as Total IgE. This is a test option to consider for patients who may suffer an immediate reaction to specific foods.

The IgE allergic response is the most well-known food allergy reaction. IgE food allergy reactions usually occur immediately after the ingestion of offending foods, such as peanuts or shellfish. The IgE food antibody profile measures levels of antigen-specific IgE to common foods.

Some of the common foods that people have an IgE-mediated reaction to are things like nuts, milk and eggs.

It is recommended that IgE allergy testing is only performed for infants greater than 18 months of age.

Common Conditions:

Irritable Bowel Syndrome - IBS

Inflammatory Bowel Disease - IBD