Organic Acids Test (OAT) + IgG Food MAP with Candida + Yeast Combo - DBS

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The Great Plains Laboratory, Inc. is now offering the Organic Acids Test and IgG Food MAP with Candida + Yeast as a combination. This combo test is an excellent option if your insurance company doesn't reimburse for the standalone IgG Food MAP with Candida + Yeast. Below is an overview of the tests:


The Organic Acids Test (OAT) offers an accurate evaluation of intestinal yeast and bacteria. Abnormal toxic levels of these microorganisms can cause or worsen behavior disorders, hyperactivity, movement disorders, affect energy levels and immune function. Many people with chronic illnesses and neurological disorders often excrete one or more abnormal organic acids. The cause of these toxic levels include: oral antibiotic use, high sugar diets, immune deficiencies, and genetic factors.

If abnormalities are detected in the OAT, treatment can include supplements, vitamins, antioxidants and dietary modification. Upon treatment, patients and physicians have reported significant improvement such as decreased fatigue, regular bowel movements, increased energy and alertness, increased concentration, improved verbal skills, less hyperactivity, and decreased abdominal pain.

U.S. Patent # 5,686,311 for specific OAT compounds: Certain uses of the compounds arabinose, citramalic, tartaric, 3-oxoglutaric, carboxycitric, 3,4-dihydroxyphenylpropionic (DHPPA), and 3-(3-hydroxyphenyl)-3-hydroxypropionic (HPHPA) acids in their application to autism in the Organic Acids Test and Microbial Organic Acids Test are protected by USA patent 5,686,311 granted November 11, 1997.


The IgG Food MAP with Candida + Yeast is a useful guide for structuring elimination diets in many chronic conditions. Sometimes referred to as "delayed allergies", IgG food reactions require removal of the offending foods for several months to years. Individuals with neurological, gastrointestinal, and movement disorders often suffer from IgG-mediated food reactions. These people may continue to eat offending foods, unaware of their potential effects. The 192 foods tested in the IgG Food MAP with Candida + Yeast will identify the offending food so they can be eliminated from the diet. This elimination of IgG positive foods can improve symptoms of irritable bowel syndrome, autism, AD(H)D, cystic fibrosis, rheumatoid arthritis, and epilepsy according to numerous clinical studies.

The Great Plains Laboratory, Inc. recently added Candida to the IgG Food MAP with Candida + Yeast. Candida problems are caused when the benign yeast form of Candida albicans mutates to its fungal form. Candida can take over sections of the intestinal tract resulting in numerous symptoms. As it grows out of balance it produces toxins that create holes in the lining of the intestines, leading to leaky gut syndrome. After entering the blood, Candida albicans causes an inflammatory immune system response. A wide range of disorders have been linked to Candida including autism, multiple sclerosis, depression, and chronic fatigue. Use of antibiotics, oral contraceptives, chemotherapy, and anti-inflammatory steroids greatly increase susceptibility to Candida.


  • The OAT and IgG Food MAP with Candida + Yeast combo provides a more in-depth evaluation of overall nutritional status and digestive sufficiency.

  • Combining these tests help the physician to evaluate the patient’s “state of the gut” and the contribution of gastrointestinal health to the patient’s chronic conditions.

  • Sampling for the two tests at the same time strengthens the usefulness of the single tests.

  • Along with the physician’s clinical assessment, a treatment plan can be designed from the two tests, which show a total of 268 markers (192 IgG food sensitivities and 76 OAT metabolites combined).


The IgG Food Allergy Test is available as both Serum and Dried Blood Spot.

Urine: 10 mL of first morning urine before food or drink is suggested. Patient should avoid apples, grapes (including raisins), pears, cranberries and their juices 24 hours prior to specimen collection.  Avoid arabinogalactan, echinacea, reishi mushrooms, and ribose supplements for 12 hours before collection.

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

Please note that the elimination of a food prior to sampling will reduce the ability for our laboratory to detect antibodies (allergies) to that food.