IgG Food Allergy Testing

What is IgG Food Allergy + Candida Testing?

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IgG test measures your body’s immune response to 93 foods. It helps provide guidance on what foods are causing discomfort and how to tailor your diet. IgGs are sometimes hard to identify because the body's response may be delayed by several hours or days.  

IgG test results can aid in the structuring of elimination diets that may relieve symptoms of many chronic neurological, gastrointestinal, and movement disorders.

This panel also includes Candida Testing. When Candida or its byproducts enter the blood, Candida contributes to a chronic inflammatory immune system response. 

Why perform IgG Food Allergy + Candida Test?

By measuring IgG antibodies specific to antigenic food proteins, it is possible to identify which foods may be responsible for hard-to-define symptoms. The 93 foods tested in the IgG Food Allergy Test w/ Candida include representatives of major food groups common in the western diet. 


Elimination of IgG-positive foods can improve symptoms of irritable bowel syndrome, autism, ADHD, cystic fibrosis, rheumatoid arthritis, and epilepsy, according to numerous clinical studies.

The Great Plains Laboratory, Inc. has added Candida to the IgG Food Allergy Test. Candida problems are thought to be caused when the benign yeast form of Candida albicans or other Candida species mutates to its fungal form

Who Would Benefit From IgG Food Allergy Testing?


Adults or children experiencing:

  • Non-celiac gluten sensitivity

  • Dry or Itchy Skin

  • Fatigue 

  • Bloating 

  • Stomach pains

  • Food Intolerance

  • Gastrointestinal (GI) distress

  • Headaches

  • Joint Pain

  • Migraines

  • Vitamin deficiencies

Analyte List

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Price list:



IgG + Candida* 




*Includes 45-min nutrition follow up consultation

Sample Report

Why Test? 

  • Helps determine if food reactions are contributing to physical or mental symptoms

  • Removal of highly reactive foods from the diet is a non-invasive, food-based therapy that often mitigates a patient's symptoms

  • Research and clinical studies suggest food allergies identified by IgG testing can be a major contributing factor in many chronic health conditions

  • Food rotation and elimination diets can reduce stress on the immune system, lower gut inflammation, resolve food cravings, and reduce the potential for eating disorders


Collection Instructions


Dried Blood Spot (DBS)

The specimen can be collected from the convenience of home and shipped to our laboratory for analysis. The dried blood spot test is the same price as the analysis.

​Dried Blood Spot (DBS) requirements: Five full circles of dried blood on the protein saver card is required.

Serum Collection

Serum: 1 mL of in a gold-topped SST or in a royal blue-topped no additive tube.


Contact us

412 Elden Street, Herndon, VA 20170

Tel. (703) 657-0303

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